Frazho, Arthur E.; Augenstein, David L. A remark on two solutions to the rational Nehari interpolation problem. (English) Zbl 0738.47017 Integral Equations Oper. Theory 14, No. 2, 304-310 (1991). Reviewer: Wu Pei Yuan (Hsinchu) MSC: 47A57 47A20 47B35 PDFBibTeX XMLCite \textit{A. E. Frazho} and \textit{D. L. Augenstein}, Integral Equations Oper. Theory 14, No. 2, 304--310 (1991; Zbl 0738.47017) Full Text: DOI
Frazho, Arthur E. A note on the commutant lifting theorem and a generalized four block problem. (English) Zbl 0738.47016 Integral Equations Oper. Theory 14, No. 2, 299-303 (1991). Reviewer: Wu Pei Yuan (Hsinchu) MSC: 47A57 47A20 47B35 PDFBibTeX XMLCite \textit{A. E. Frazho}, Integral Equations Oper. Theory 14, No. 2, 299--303 (1991; Zbl 0738.47016) Full Text: DOI
Kato, Tosio Positive commutators \(i[f(P),g(Q)]\). (English) Zbl 0751.47020 J. Funct. Anal. 96, No. 1, 117-129 (1991). Reviewer: Kh.N.Boyadzhiev (Ada) MSC: 47B47 47B10 PDFBibTeX XMLCite \textit{T. Kato}, J. Funct. Anal. 96, No. 1, 117--129 (1991; Zbl 0751.47020) Full Text: DOI
Azoff, E. A.; Shehada, H. A. On separation by families of linear functionals. (English) Zbl 0753.46006 J. Funct. Anal. 96, No. 1, 96-116 (1991). Reviewer: T.K.Mukherjee (Calcutta) MSC: 46A22 46B20 PDFBibTeX XMLCite \textit{E. A. Azoff} and \textit{H. A. Shehada}, J. Funct. Anal. 96, No. 1, 96--116 (1991; Zbl 0753.46006) Full Text: DOI
Torres, Rodolfo H. Boundedness results for operators with singular kernels on distribution space. (English) Zbl 0737.47041 Mem. Am. Math. Soc. 442, 172 p. (1991). Reviewer: V.Matache (Timişoara) MSC: 47Gxx 47B38 46E35 46F12 PDFBibTeX XMLCite \textit{R. H. Torres}, Boundedness results for operators with singular kernels on distribution space. Providence, RI: American Mathematical Society (AMS) (1991; Zbl 0737.47041) Full Text: DOI
Mulvey, Christopher J.; Pelletier, Joan Wick A geometric characterization concerning compact, convex sets. (English) Zbl 0746.46013 Math. Proc. Camb. Philos. Soc. 109, No. 2, 351-361 (1991). Reviewer: I.Raşa (Cluj-Napoca) MSC: 46A55 46A50 46S30 46A22 03F65 PDFBibTeX XMLCite \textit{C. J. Mulvey} and \textit{J. W. Pelletier}, Math. Proc. Camb. Philos. Soc. 109, No. 2, 351--361 (1991; Zbl 0746.46013) Full Text: DOI
Barnovska, M.; Il’in, B. A. On the order of almost everywhere equiconvergence of Riesz means of non- self-adjoint extensions of the Laplace operator. (Russian. English summary) Zbl 0755.35077 Math. Slovaca 41, No. 2, 205-222 (1991). MSC: 35P05 47F05 35J05 PDFBibTeX XMLCite \textit{M. Barnovska} and \textit{B. A. Il'in}, Math. Slovaca 41, No. 2, 205--222 (1991; Zbl 0755.35077) Full Text: EuDML
Roth, Jean-Pierre Théorèmes de convergence presque-partout. (Theorems of almost- everywhere convergence). (French) Zbl 0759.47007 C. R. Acad. Sci., Paris, Sér. I 312, No. 1, 51-54 (1991). MSC: 47A35 46E30 28A20 28D05 46A22 PDFBibTeX XMLCite \textit{J.-P. Roth}, C. R. Acad. Sci., Paris, Sér. I 312, No. 1, 51--54 (1991; Zbl 0759.47007)
Bercovici, Hari; Foias, Ciprian On spectral tangential Nevanlinna-Pick interpolation. (English) Zbl 0742.47006 J. Math. Anal. Appl. 155, No. 1, 156-176 (1991). Reviewer: G.Corach (Buenos Aires) MSC: 47A57 41A05 PDFBibTeX XMLCite \textit{H. Bercovici} and \textit{C. Foias}, J. Math. Anal. Appl. 155, No. 1, 156--176 (1991; Zbl 0742.47006) Full Text: DOI
Derkach, V. A.; Malamud, M. M. Generalized resolvents and the boundary value problems for Hermitian operators with gaps. (English) Zbl 0748.47004 J. Funct. Anal. 95, No. 1, 1-95 (1991). Reviewer: H.Neidhardt MSC: 47A20 47A10 47A57 PDFBibTeX XMLCite \textit{V. A. Derkach} and \textit{M. M. Malamud}, J. Funct. Anal. 95, No. 1, 1--95 (1991; Zbl 0748.47004) Full Text: DOI
Rommelfanger, H.; Keresztfalvi, T. Multicriteria fuzzy optimization based on Yager’s parametrized \(t\)-norm. (English) Zbl 0814.90130 Found. Comput. Decis. Sci. 16, No. 2, 99-110 (1991). MSC: 90C70 90C29 PDFBibTeX XMLCite \textit{H. Rommelfanger} and \textit{T. Keresztfalvi}, Found. Comput. Decis. Sci. 16, No. 2, 99--110 (1991; Zbl 0814.90130)
Neumann, Michael M. Generalized convexity and the Mazur-Orlicz theorem. (English) Zbl 0752.46005 Proc. Orlicz Mem. Conf., Oxford/MS (USA) 1991, Exp. No. 8, 1-15 (1991). Reviewer: H.von Weizsäcker (Kaiserslautern) MSC: 46A22 46A40 46N10 52A01 PDFBibTeX XML
Kalton, Nigel The atomic space problem and related questions for F-spaces. (English) Zbl 0754.46001 Proc. Orlicz Mem. Conf., Oxford/MS (USA) 1991, Exp. No. 2, 1-10 (1991). Reviewer: R.Meise (Düsseldorf) MSC: 46A16 PDFBibTeX XML
Okubo, K.; Ando, T. Norms of Schur multiplication operator. (English) Zbl 0810.47006 Koshi, Shozo (ed.), Functional analysis and related topics. Proceedings of the international symposium, held at Hokkaido University, Sapporo, Japan, August 31 - September 4, 1990. River Edge, NJ: World Scientific Publishing Co., Inc. 206-210 (1991). MSC: 47A30 47A57 PDFBibTeX XMLCite \textit{K. Okubo} and \textit{T. Ando}, in: Functional analysis and related topics. Proceedings of the international symposium, held at Hokkaido University, Sapporo, Japan, August 31 - September 4, 1990. River Edge, NJ: World Scientific Publishing Co., Inc.. 206--210 (1991; Zbl 0810.47006)
Kapos, L.; Paez, J. Unique extremal extensions of suboperators. (English) Zbl 0780.47007 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 34, 15-19 (1991). MSC: 47A20 PDFBibTeX XMLCite \textit{L. Kapos} and \textit{J. Paez}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 34, 15--19 (1991; Zbl 0780.47007)
Ivanov, L. D. Linear operators in Banach spaces. Lecture notes. (Linejnye operatory v banakhovykh prostranstvakh. Konspekt lektsij.) (Russian) Zbl 0818.47001 Tver’: Tverskoj Gosudarstvennyj Universitet. 44 p. (1991). Reviewer: Il’ya Sh. Mogilevskij (Tver’) MSC: 47-01 46-01 46A22 46B10 47L10 46A30 PDFBibTeX XMLCite \textit{L. D. Ivanov}, Linejnye operatory v banakhovykh prostranstvakh. Konspekt lektsij (Russian). Tver': Tverskoj Gosudarstvennyj Universitet (1991; Zbl 0818.47001)
Li, Shizheng Necessary and sufficient conditions for extension of nonnegative linear functionals. (Chinese) Zbl 0756.46002 Chin. Ann. Math., Ser. A 12, Suppl., 16-21 (1991). Reviewer: Li Shaokuan (Shanghai) MSC: 46A22 46A20 46A55 PDFBibTeX XMLCite \textit{S. Li}, Chin. Ann. Math., Ser. A 12, 16--21 (1991; Zbl 0756.46002)
Bayoumi, Aboubakr Remarks on linear functionals and new proof of Kalton’s theorem in locally bounded spaces. (English) Zbl 0846.46001 Koshi, Shozo (ed.), Functional analysis and related topics. Proceedings of the international symposium, held at Hokkaido University, Sapporo, Japan, August 31 - September 4, 1990. River Edge, NJ: World Scientific Publishing Co., Inc. 238-246 (1991). MSC: 46A22 46A16 46G20 PDFBibTeX XMLCite \textit{A. Bayoumi}, in: Functional analysis and related topics. Proceedings of the international symposium, held at Hokkaido University, Sapporo, Japan, August 31 - September 4, 1990. River Edge, NJ: World Scientific Publishing Co., Inc.. 238--246 (1991; Zbl 0846.46001)
Putinar, Mihai Inverse problems of perturbation theory and moment problems. (English) Zbl 0829.47014 Koshi, Shozo (ed.), Functional analysis and related topics. Proceedings of the international symposium, held at Hokkaido University, Sapporo, Japan, August 31 - September 4, 1990. River Edge, NJ: World Scientific Publishing Co., Inc. 99-116 (1991). Reviewer: M.A.Kaashoek (Amsterdam) MSC: 47A57 47A55 PDFBibTeX XMLCite \textit{M. Putinar}, in: Functional analysis and related topics. Proceedings of the international symposium, held at Hokkaido University, Sapporo, Japan, August 31 - September 4, 1990. River Edge, NJ: World Scientific Publishing Co., Inc.. 99--116 (1991; Zbl 0829.47014)
Frazho, Arthur E. A commutant lifting approach to tangential interpolation. (English) Zbl 0774.47004 J. Math. Anal. Appl. 162, No. 1, 159-176 (1991). MSC: 47A57 PDFBibTeX XMLCite \textit{A. E. Frazho}, J. Math. Anal. Appl. 162, No. 1, 159--176 (1991; Zbl 0774.47004) Full Text: DOI
Král, Josef Extension results of the Radó type. (English) Zbl 0753.35024 Rev. Roum. Math. Pures Appl. 36, No. 1-2, 71-76 (1991). Reviewer: O.Martio (Jyväskylä) MSC: 35J15 30E25 31B05 PDFBibTeX XMLCite \textit{J. Král}, Rev. Roum. Math. Pures Appl. 36, No. 1--2, 71--76 (1991; Zbl 0753.35024)
Beattie, Ronald; Butzmann, H.-P. Convergence and distributions. (English) Zbl 0766.46027 Atti Semin. Mat. Fis. Univ. Modena 39, No. 2, 487-494 (1991). MSC: 46F05 46A19 46A22 PDFBibTeX XMLCite \textit{R. Beattie} and \textit{H. P. Butzmann}, Atti Semin. Mat. Fis. Univ. Modena 39, No. 2, 487--494 (1991; Zbl 0766.46027)
Mackrodt, Christof Representation forms for metacyclic groups. (English) Zbl 0760.57020 Manuscr. Math. 73, No. 3, 261-287 (1991). Reviewer: C.T.C.Wall (Liverpool) MSC: 57S25 57R67 55P91 57S17 PDFBibTeX XMLCite \textit{C. Mackrodt}, Manuscr. Math. 73, No. 3, 261--287 (1991; Zbl 0760.57020) Full Text: DOI EuDML
Meftah, Mokhtar Sufficient compacity conditions of the resolvent of a Schrödinger operator with a magnetic field. (Conditions suffisantes pour la compacité de la résolvante d’un opérateur de Schrödinger avec un champ magnétique.) (French) Zbl 0754.35093 J. Math. Kyoto Univ. 31, No. 3, 875-880 (1991). Reviewer: A.Martinez (Villetaneuse) MSC: 35P05 35J10 81Q10 PDFBibTeX XMLCite \textit{M. Meftah}, J. Math. Kyoto Univ. 31, No. 3, 875--880 (1991; Zbl 0754.35093) Full Text: DOI
Misra, Gadadhar Pick-Nevanlinna interpolation theorem and multiplication operators on functional Hilbert spaces. (English) Zbl 0847.47014 Integral Equations Oper. Theory 14, No. 6, 825-836 (1991). MSC: 47A57 46E20 PDFBibTeX XMLCite \textit{G. Misra}, Integral Equations Oper. Theory 14, No. 6, 825--836 (1991; Zbl 0847.47014) Full Text: DOI
Borogovac, M. Multiplicities of nonsimple zeros of meromorphic matrix functions of the class \(N_ k^{n\times n}\). (English) Zbl 0811.47009 Math. Nachr. 153, 69-77 (1991). MSC: 47A56 15A99 30C15 30D30 47A57 PDFBibTeX XMLCite \textit{M. Borogovac}, Math. Nachr. 153, 69--77 (1991; Zbl 0811.47009) Full Text: DOI
Burskij, V. P. A commutative diagram connected with a differential operator in a domain. (English. Russian original) Zbl 0766.35008 Ukr. Math. J. 43, No. 12, 1588-1594 (1991); translation from Ukr. Mat. Zh. 43, No. 12, 1703-1709 (1991). Reviewer: Yu.V.Egorov (Toulouse) MSC: 35G05 PDFBibTeX XMLCite \textit{V. P. Burskij}, Ukr. Math. J. 43, No. 12, 1588--1594 (1991; Zbl 0766.35008); translation from Ukr. Mat. Zh. 43, No. 12, 1703--1709 (1991) Full Text: DOI
Danielyan, Eh. A.; Manukyan, V. R.; Tatalyan, K. R. The Markov inequality on indexed classes. (Russian) Zbl 0758.47013 Dokl., Akad. Nauk Arm. SSR 92, No. 1, 24-30 (1991). Reviewer: S.B.Yakubovich (Minsk) MSC: 47A57 60E05 60E15 42A70 PDFBibTeX XMLCite \textit{Eh. A. Danielyan} et al., Dokl., Akad. Nauk Arm. SSR 92, No. 1, 24--30 (1991; Zbl 0758.47013)
Meyer-Nieberg, Peter On the local spectral theory for positive and non-positive operators. (English) Zbl 0829.47001 Indag. Math., New Ser. 2, No. 3, 319-325 (1991). MSC: 47A10 47A15 47B65 46B42 PDFBibTeX XMLCite \textit{P. Meyer-Nieberg}, Indag. Math., New Ser. 2, No. 3, 319--325 (1991; Zbl 0829.47001) Full Text: DOI
Derkach, V. A. On generalized resolvents of a class of Hermitian operators in a Krein space. (English. Russian original) Zbl 0895.47025 Sov. Math., Dokl. 43, No. 2, 519-524 (1991); translation from Dokl. Akad. Nauk SSSR 317, No. 4, 807-812 (1991). MSC: 47B50 47A10 47B15 47A57 PDFBibTeX XMLCite \textit{V. A. Derkach}, Sov. Math., Dokl. 43, No. 2, 519--524 (1991; Zbl 0895.47025); translation from Dokl. Akad. Nauk SSSR 317, No. 4, 807--812 (1991)
Oja, Eve Extension of functionals and the structure of the space of continuous linear operators. (Продолжение функционалов и структура пространства непрерывных линейных операторов.) (Russian) Zbl 0783.46016 Tartu: Tartuskiĭ Gosudarsvennyĭ Universitet, 128 p. (1991). Reviewer: G. M. Ustinov (M.R. 92g:46019) MSC: 46B20 46A22 46B28 46-02 46A32 46B10 47L05 PDFBibTeX XMLCite \textit{E. Oja}, Продолжение функционалов и структура пространства непрерывных линейных операторов (Russian). Tartu: Tartuskij Gosudarsvennyj Universitet (1991; Zbl 0783.46016)
Arocena, Rodrigo Some remarks on lifting and interpolation theorems. (English) Zbl 0786.47018 Rev. Unión Mat. Argent. 37, No. 3-4, 200-211 (1991). MSC: 47A57 47A40 PDFBibTeX XMLCite \textit{R. Arocena}, Rev. Unión Mat. Argent. 37, No. 3--4, 200--211 (1991; Zbl 0786.47018)
Li, Zizhi; Li, Hongzhen The method of approximate solution of mixed boundary value problem for nonlinear elliptic complex equations of second order. (English) Zbl 0786.35006 Wen, Guo-Chun (ed.) et al., Integral equations and boundary value problems. Proceedings of the international conference. Beijing, China, 2-7 September 1990. Singapore: World Scientific. 102-109 (1991). MSC: 35A35 35J65 PDFBibTeX XMLCite \textit{Z. Li} and \textit{H. Li}, in: Integral equations and boundary value problems. Proceedings of the international conference. Beijing, China, 2-7 September 1990. Singapore: World Scientific. 102--109 (1991; Zbl 0786.35006)
Gekhtman, M. I.; Kalyuzhnyj, A. A. Spectral theory of orthogonal polynomials of several variables. (Russian) Zbl 0763.47010 Ukr. Mat. Zh. 43, No. 10, 1437-1440 (1991). Reviewer: A.L.Dawidowicz (Kraków) MSC: 47A57 47B15 PDFBibTeX XMLCite \textit{M. I. Gekhtman} and \textit{A. A. Kalyuzhnyj}, Ukr. Mat. Zh. 43, No. 10, 1437--1440 (1991; Zbl 0763.47010) Full Text: DOI
Bruinsma, Piet Degenerate interpolation problems for Nevanlinna pairs. (English) Zbl 0733.47014 Indag. Math., New Ser. 2, No. 2, 179-200 (1991). Reviewer: J.A.Ball (Blacksburg) MSC: 47A57 47A56 47A20 46E20 30E05 PDFBibTeX XMLCite \textit{P. Bruinsma}, Indag. Math., New Ser. 2, No. 2, 179--200 (1991; Zbl 0733.47014) Full Text: DOI
Völklein, Helmut \(\mathrm{PSL}_2(q)\) and extensions of \(\mathbb Q(x)\). (English) Zbl 0732.12008 Bull. Am. Math. Soc., New Ser. 24, No. 1, 145-153 (1991). Reviewer: Nuria Vila (Barcelona) MSC: 12F12 11R32 20B25 20G40 20C25 PDFBibTeX XMLCite \textit{H. Völklein}, Bull. Am. Math. Soc., New Ser. 24, No. 1, 145--153 (1991; Zbl 0732.12008) Full Text: DOI
Bourgain, J.; Tzafriri, L. On a problem of Kadison and Singer. (English) Zbl 0729.47028 J. Reine Angew. Math. 420, 1-43 (1991). MSC: 47B37 47L05 PDFBibTeX XMLCite \textit{J. Bourgain} and \textit{L. Tzafriri}, J. Reine Angew. Math. 420, 1--43 (1991; Zbl 0729.47028) Full Text: Crelle EuDML
Gohberg, I.; Kaashoek, M. A.; Woerdeman, H. J. A maximum entropy principle in the general framework of the band method. (English) Zbl 0728.47013 J. Funct. Anal. 95, No. 2, 231-254 (1991). Reviewer: G.Corach (Buenos Aires) MSC: 47A68 46K05 47A56 PDFBibTeX XMLCite \textit{I. Gohberg} et al., J. Funct. Anal. 95, No. 2, 231--254 (1991; Zbl 0728.47013) Full Text: DOI
Vol’berg, A. L.; Peller, V. V.; Yakubovich, D. V. A brief excursion to the theory of hyponormal operators. (English. Russian original) Zbl 0726.47015 Leningr. Math. J. 2, No. 2, 211-243 (1991); translation from Algebra Anal. 2, No. 2, 1-38 (1990). Reviewer: M.Martin (Bucureşti) MSC: 47B20 47A40 47A57 47A15 PDFBibTeX XMLCite \textit{A. L. Vol'berg} et al., Leningr. Math. J. 2, No. 2, 211--243 (1991; Zbl 0726.47015); translation from Algebra Anal. 2, No. 2, 1--38 (1990)
Müller, Peter Transitive linear groups with large soluble normal subgroups. (English) Zbl 0723.20027 Geom. Dedicata 38, No. 3, 329-330 (1991). Reviewer: B.A.F.Wehrfritz (London) MSC: 20H25 20E07 16K40 16U70 PDFBibTeX XMLCite \textit{P. Müller}, Geom. Dedicata 38, No. 3, 329--330 (1991; Zbl 0723.20027) Full Text: DOI
Kusraev, A. G.; Malyugin, S. A. Product and projective limit of vector measures. (English. Russian original) Zbl 0722.28006 Sib. Adv. Math. 1, No. 2, 77-98 (1991); translation from Tr. Inst. Mat. 14, 132-152 (1989). MSC: 28B15 28B05 46A40 46G10 PDFBibTeX XMLCite \textit{A. G. Kusraev} and \textit{S. A. Malyugin}, Sib. Adv. Math. 1, No. 2, 77--98 (1991; Zbl 0722.28006); translation from Tr. Inst. Mat. 14, 132--152 (1989)
Kelly, P. F. Expansions of non-symmetric gravitational theories about a GR background. (English) Zbl 0719.53056 Classical Quantum Gravity 8, No. 6, 1217-1229 (1991). MSC: 53B50 83D05 PDFBibTeX XMLCite \textit{P. F. Kelly}, Classical Quantum Gravity 8, No. 6, 1217--1229 (1991; Zbl 0719.53056) Full Text: DOI
Ubøe, Jan Integral operators on interpolation sets in \({\mathbb{C}}^ n\). (English) Zbl 0713.32002 Complex Variables, Theory Appl. (to appear). Reviewer: J.Ubøe MSC: 32A25 32E30 PDFBibTeX XML
Paez, J.; Sebestyén, Z.; Stochel, J. Restrictions of compact normal operators. (English) Zbl 0759.47016 Acta Math. Hung. 57, No. 3-4, 313-314 (1991). Reviewer: J.Achari (Nanded) MSC: 47B07 47B15 PDFBibTeX XMLCite \textit{J. Paez} et al., Acta Math. Hung. 57, No. 3--4, 313--314 (1991; Zbl 0759.47016) Full Text: DOI
Gehrlein, W. V. Frequency estimates for linear extension majority cycles on partial orders. (English) Zbl 0755.06001 RAIRO, Rech. Opér. 25, No. 4, 359-364 (1991). Reviewer: V.E.Zhukovin (Tbilisi) MSC: 06A06 91B08 65C05 PDFBibTeX XMLCite \textit{W. V. Gehrlein}, RAIRO, Rech. Opér. 25, No. 4, 359--364 (1991; Zbl 0755.06001) Full Text: DOI EuDML
Sharary, Ahmad The jump number of Z-free ordered sets. (English) Zbl 0759.06002 Order 8, No. 3, 267-273 (1991). Reviewer: C.Masalagiu (Iaşi) MSC: 06A07 68R05 68Q25 PDFBibTeX XMLCite \textit{A. Sharary}, Order 8, No. 3, 267--273 (1991; Zbl 0759.06002) Full Text: DOI
Buschman, Robert G. Extension of an algebraic system without identity to a system with identity and with preservation of other properties. (English) Zbl 0747.17005 Gaṇita Sandesh 5, No. 1, 1-4 (1991). Reviewer: Robert G.Buschman (Langlois) MSC: 17A99 45A05 PDFBibTeX XMLCite \textit{R. G. Buschman}, Gaṇita Sandesh 5, No. 1, 1--4 (1991; Zbl 0747.17005)
Li, Shaokuan Quasinormal operators on Krein space. (English) Zbl 0749.47012 Acta Math. Sin., New Ser. 7, No. 4, 370-374 (1991). Reviewer: T.Ando (Sapporo) MSC: 47B20 47B50 PDFBibTeX XMLCite \textit{S. Li}, Acta Math. Sin., New Ser. 7, No. 4, 370--374 (1991; Zbl 0749.47012) Full Text: DOI
Rauch, Patrick Pseudocomplémentation dans les espaces de Banach. (Pseudocomplementation in Banach spaces). (French) Zbl 0759.46022 Stud. Math. 100, No. 3, 251-282 (1991). Reviewer: T.Precupanu (Iaşi) MSC: 46B20 46B25 46B28 46E30 46A22 47B10 PDFBibTeX XMLCite \textit{P. Rauch}, Stud. Math. 100, No. 3, 251--282 (1991; Zbl 0759.46022) Full Text: DOI EuDML
Gekhtman, M. I.; Kalyuzhnyj, A. A. Spectral theory of orthogonal polynomials of several variables. (English. Russian original) Zbl 0786.47019 Ukr. Math. J. 43, No. 10, 1334-1337 (1991); translation from Ukr. Mat. Zh. 43, No. 10, 1437-1440 (1991). MSC: 47A57 47B15 PDFBibTeX XMLCite \textit{M. I. Gekhtman} and \textit{A. A. Kalyuzhnyj}, Ukr. Math. J. 43, No. 10, 1334--1337 (1991; Zbl 0786.47019); translation from Ukr. Mat. Zh. 43, No. 10, 1437--1440 (1991) Full Text: DOI
Bakan, A. G. Separability and distance. (English. Russian original) Zbl 0810.46006 Math. Notes 50, No. 5, 1103-1106 (1991); translation from Mat. Zametki 50, No. 5, 18-22 (1991). Reviewer: P.Kruszyński (Delft) MSC: 46A22 PDFBibTeX XMLCite \textit{A. G. Bakan}, Math. Notes 50, No. 5, 1103--1106 (1991; Zbl 0810.46006); translation from Mat. Zametki 50, No. 5, 18--22 (1991) Full Text: DOI
Li, Weixuan A polynomial algorithm for finding a bumb optimal extension of an ordered set. (English) Zbl 0736.06004 Syst. Sci. Math. Sci. 4, No. 1, 14-19 (1991). MSC: 06A06 68Q25 PDFBibTeX XMLCite \textit{W. Li}, Syst. Sci. Math. Sci. 4, No. 1, 14--19 (1991; Zbl 0736.06004)
Olteanu, Octav Application de théorèmes de prolongement d’opérateurs linéaires au problème des moments et à une généralisation d’un théorème de Mazur-Orlicz. (Application of the theorems of extension of linear operators to the moment problem and to a generalization of a Mazur-Orlicz theorem). (French) Zbl 0764.47008 C. R. Acad. Sci., Paris, Sér. I 313, No. 11, 739-742 (1991). Reviewer: S.Aliou Lo (Dakar) MSC: 47A57 PDFBibTeX XMLCite \textit{O. Olteanu}, C. R. Acad. Sci., Paris, Sér. I 313, No. 11, 739--742 (1991; Zbl 0764.47008)
Kulcsárová, Oľga A note on the extension of functionals. (English) Zbl 0753.28012 Acta Univ. Lodz., Folia Math. 4, 61-66 (1991). Reviewer: B.Riečan (Bratislava) MSC: 28C05 PDFBibTeX XMLCite \textit{O. Kulcsárová}, Acta Univ. Lodz., Folia Math. 4, 61--66 (1991; Zbl 0753.28012)
Buckley, J. J.; Qu, Y. Solving systems of linear fuzzy equations. (English) Zbl 0741.65023 Fuzzy Sets Syst. 43, No. 1, 33-43 (1991). Reviewer: R.P.Tewarson (Stony Brook) MSC: 65F05 15A06 03E72 PDFBibTeX XMLCite \textit{J. J. Buckley} and \textit{Y. Qu}, Fuzzy Sets Syst. 43, No. 1, 33--43 (1991; Zbl 0741.65023) Full Text: DOI
Smirnov, E. I. Hausdorff spectra in functional analysis. (Khausdorfovy spektry v funktsional’nom analize.) (Russian) Zbl 0789.46058 Yaroslavl’: Yaroslavskij Gosudarstvennyj Pedagogicheskij Institut Imeni K. D. Ushinskogo, 178 p. (1991). Reviewer: K.Seddighi (Shiraz) MSC: 46M15 46-02 18E05 46G05 49J52 46B99 46M10 PDFBibTeX XMLCite \textit{E. I. Smirnov}, Khausdorfovy spektry v funktsional'nom analize (Russian). Yaroslavl': Yaroslavskij Gosudarstvennyj Pedagogicheskij Institut Imeni K. D. Ushinskogo (1991; Zbl 0789.46058)
Boffa, Maurice; Point, Françoise Generalized Engel identities. (Identités de Engel généralisées.) (French) Zbl 0764.20020 C. R. Acad. Sci., Paris, Sér. I 313, No. 13, 909-911 (1991). Reviewer: A.A.Iskander (Lafayette) MSC: 20F45 20E10 20M05 20F16 20G15 20F18 PDFBibTeX XMLCite \textit{M. Boffa} and \textit{F. Point}, C. R. Acad. Sci., Paris, Sér. I 313, No. 13, 909--911 (1991; Zbl 0764.20020)
Wu, Jingbo Normal extensions of semigroups of operators to Krein spaces. (English) Zbl 0767.47023 Acta Math. Sin., New Ser. 7, No. 3, 205-215 (1991). MSC: 47D06 47B50 46C20 PDFBibTeX XMLCite \textit{J. Wu}, Acta Math. Sin., New Ser. 7, No. 3, 205--215 (1991; Zbl 0767.47023) Full Text: DOI
Oversteegen, Lex G. Factorizations of mappings through arcs. (English) Zbl 0776.54027 Houston J. Math. 17, No. 3, 443-451 (1991). MSC: 54F50 54C20 57M15 PDFBibTeX XMLCite \textit{L. G. Oversteegen}, Houston J. Math. 17, No. 3, 443--451 (1991; Zbl 0776.54027)
Sebestyén, Zoltán; Stochel, Jan Restrictions of positive self-adjoint operators. (English) Zbl 0897.47015 Acta Sci. Math. 55, No. 1-2, 149-154 (1991). MSC: 47B25 47A20 PDFBibTeX XMLCite \textit{Z. Sebestyén} and \textit{J. Stochel}, Acta Sci. Math. 55, No. 1--2, 149--154 (1991; Zbl 0897.47015)
Nævdal, Geir A comment on Parrott’s theorem. (English) Zbl 0741.47002 SIAM J. Numer. Anal. 28, No. 5, 1517-1522 (1991). Reviewer: P.C.Sinha MSC: 47A20 15A60 PDFBibTeX XMLCite \textit{G. Nævdal}, SIAM J. Numer. Anal. 28, No. 5, 1517--1522 (1991; Zbl 0741.47002) Full Text: DOI
Borges, Carlos R. Are EC-spaces AE(metrizable)? (English) Zbl 0741.54010 Colloq. Math. 62, No. 1, 135-143 (1991). Reviewer: J.M.R.Sanjurjo (Madrid) MSC: 54C55 46A55 54C20 54E35 PDFBibTeX XMLCite \textit{C. R. Borges}, Colloq. Math. 62, No. 1, 135--143 (1991; Zbl 0741.54010) Full Text: DOI EuDML
Tanbay, Betül Pure state extensions and compressibility of the \(\ell_ 1\)-algebra. (English) Zbl 0756.46026 Proc. Am. Math. Soc. 113, No. 3, 707-713 (1991). Reviewer: F.H.Vasilescu (Bucureşti) MSC: 46L05 46L30 47A20 PDFBibTeX XMLCite \textit{B. Tanbay}, Proc. Am. Math. Soc. 113, No. 3, 707--713 (1991; Zbl 0756.46026) Full Text: DOI
Alpay, Daniel; Bruinsma, Piet; Dijksma, Aad; de Snoo, Henk Interpolation problems, extensions of symmetric operators and reproducing kernel spaces. II. (English) Zbl 0787.47013 Integral Equations Oper. Theory 14, No. 4, 465-500 (1991). MSC: 47A57 46E22 PDFBibTeX XMLCite \textit{D. Alpay} et al., Integral Equations Oper. Theory 14, No. 4, 465--500 (1991; Zbl 0787.47013) Full Text: DOI
Gohberg, I.; Kaashoek, M. A.; Woerdeman, H. J. The band method for several positive extension problems of non-band type. (English) Zbl 0799.47021 J. Oper. Theory 26, No. 1, 191-218 (1991). Reviewer: Y.A.Abramovich (Indianapolis) MSC: 47C05 47B65 PDFBibTeX XMLCite \textit{I. Gohberg} et al., J. Oper. Theory 26, No. 1, 191--218 (1991; Zbl 0799.47021)
Putnam, C. R. Subnormal weighted shifts and spectra. (English) Zbl 0795.47013 J. Oper. Theory 25, No. 2, 255-274 (1991). Reviewer: G.Garske (Hagen) MSC: 47B20 47B37 47B10 PDFBibTeX XMLCite \textit{C. R. Putnam}, J. Oper. Theory 25, No. 2, 255--274 (1991; Zbl 0795.47013)
Meyer, Michael J. The spectral extension property and extension of multiplicative linear functionals. (English) Zbl 0744.46041 Proc. Am. Math. Soc. 112, No. 3, 855-861 (1991). Reviewer: Raymond Mortini (Karlsruhe) MSC: 46J15 46J05 47L05 PDFBibTeX XMLCite \textit{M. J. Meyer}, Proc. Am. Math. Soc. 112, No. 3, 855--861 (1991; Zbl 0744.46041) Full Text: DOI
Bercovici, Hari; Foias, Ciprian; Tannenbaum, Allen On the optimal solutions in spectral commutant lifting theory. (English) Zbl 0789.47015 J. Funct. Anal. 101, No. 1, 38-49 (1991). MSC: 47A57 PDFBibTeX XMLCite \textit{H. Bercovici} et al., J. Funct. Anal. 101, No. 1, 38--49 (1991; Zbl 0789.47015) Full Text: DOI
Kąkol, Jerzy; Sorjonen, Pekka Locally convex topologies in linear orthogonality spaces. (English) Zbl 0749.46002 Commentat. Math. Univ. Carol. 32, No. 1, 33-37 (1991). Reviewer: S.Koshi (Utsunomiya) MSC: 46A03 46A22 PDFBibTeX XMLCite \textit{J. Kąkol} and \textit{P. Sorjonen}, Commentat. Math. Univ. Carol. 32, No. 1, 33--37 (1991; Zbl 0749.46002) Full Text: EuDML
Blasco, Laure Dual reductive pairs in characteristic 2. (Paires duales réductives en caractéristique 2.) (French) Zbl 0736.22012 C. R. Acad. Sci., Paris, Sér. I 313, No. 3, 127-130 (1991). Reviewer: A. Deitmar (Heidelberg) MSC: 22E50 20G25 11F27 PDFBibTeX XMLCite \textit{L. Blasco}, C. R. Acad. Sci., Paris, Sér. I 313, No. 3, 127--130 (1991; Zbl 0736.22012)
Blecher, David P.; Paulsen, Vern I. Tensor products of operator spaces. (English) Zbl 0786.46056 J. Funct. Anal. 99, No. 2, 262-292 (1991). MSC: 46M05 46L05 47A80 PDFBibTeX XMLCite \textit{D. P. Blecher} and \textit{V. I. Paulsen}, J. Funct. Anal. 99, No. 2, 262--292 (1991; Zbl 0786.46056) Full Text: DOI
Eidus, D. The perturbed Laplace operator in a weighted \(L^ 2\)-space. (English) Zbl 0762.35020 J. Funct. Anal. 100, No. 2, 400-410 (1991). MSC: 35J05 35P05 47F05 PDFBibTeX XMLCite \textit{D. Eidus}, J. Funct. Anal. 100, No. 2, 400--410 (1991; Zbl 0762.35020) Full Text: DOI
Latushkin, Yu. D.; Stëpin, A. M. Weighted translation operators and linear extensions of dynamical systems. (English. Russian original) Zbl 0752.47011 Russ. Math. Surv. 46, No. 2, 95-165 (1991); translation from Usp. Mat. Nauk 46, No. 2(278), 85-143 (1991). Reviewer: N.K.Karapetyants (Rostov-na-Donu) MSC: 47B37 47A35 PDFBibTeX XMLCite \textit{Yu. D. Latushkin} and \textit{A. M. Stëpin}, Russ. Math. Surv. 46, No. 2, 95--165 (1991; Zbl 0752.47011); translation from Usp. Mat. Nauk 46, No. 2(278), 85--143 (1991) Full Text: DOI
Faina, L. Extensions of compact continuous maps into decomposable sets. (English) Zbl 0784.54018 Rend. Semin. Mat. Univ. Padova 85, 27-33 (1991). MSC: 54C20 54E40 46E10 54D30 PDFBibTeX XMLCite \textit{L. Faina}, Rend. Semin. Mat. Univ. Padova 85, 27--33 (1991; Zbl 0784.54018) Full Text: Numdam EuDML
Rabau, Patrick Action on Grassmannians associated with a field extension. (English) Zbl 0744.15026 Trans. Am. Math. Soc. 326, No. 1, 127-155 (1991). Reviewer: H.J.Kowalsky (Braunschweig) MSC: 15A75 14L30 15A03 20G15 PDFBibTeX XMLCite \textit{P. Rabau}, Trans. Am. Math. Soc. 326, No. 1, 127--155 (1991; Zbl 0744.15026) Full Text: DOI
Robson, Robert O. Separating points from closed convex sets over ordered fields and a metric for \(\tilde R^ n\). (English) Zbl 0756.46001 Trans. Am. Math. Soc. 326, No. 1, 89-99 (1991). Reviewer: H.Junek (Potsdam) MSC: 46A19 12J15 52A20 46A22 46A55 46S10 PDFBibTeX XMLCite \textit{R. O. Robson}, Trans. Am. Math. Soc. 326, No. 1, 89--99 (1991; Zbl 0756.46001) Full Text: DOI
Bonet, J.; Braun, R. W.; Meise, R.; Taylor, B. A. Whitney’s extension theorem for nonquasianalytic classes of ultradifferentiable functions. (English) Zbl 0738.46009 Stud. Math. 99, No. 2, 155-184 (1991). Reviewer: K.D.Bierstedt (Paderborn) MSC: 46E25 46E10 46F05 58C25 26E10 30D15 31A05 32U05 32W05 42B10 46A04 46A11 46A13 PDFBibTeX XMLCite \textit{J. Bonet} et al., Stud. Math. 99, No. 2, 155--184 (1991; Zbl 0738.46009) Full Text: DOI EuDML
Felsner, Stefan Bounds for the jump number of partially ordered sets. (English) Zbl 0739.06001 Operations research, Proc. 15th Symp., Vienna/Austria 1990, Methods Oper. Res. 64, 117-121 (1991). Reviewer: P.Vincke (Bruxelles) MSC: 06A06 90C27 PDFBibTeX XMLCite \textit{S. Felsner}, in: Linear time algorithms for linear programming. . 117--121 (1991; Zbl 0739.06001)
Pumplün, Dieter; Röhrl, Helmut Convexity theories. II: The Hahn-Banach theorem for real convexity theories. (English) Zbl 0781.46018 Category theory at work, Proc. Workshop, Bremen/Ger. 1991, Res. Expo. Math. 18, 387-395 (1991). MSC: 46A55 46A22 52A05 52A01 46M99 PDFBibTeX XMLCite \textit{D. Pumplün} and \textit{H. Röhrl}, in: Improving constructions in topology. . 387--395 (1991; Zbl 0781.46018)
Zippin, M. A global approach to certain operator extension problems. (English) Zbl 0757.47006 Functional analysis, Proc. Semin., Austin/TX (USA) 1987-89, Lect. Notes Math. 1470, 78-84 (1991). Reviewer: Wu Jingbo (Tianjin) MSC: 47A20 47B38 46E15 PDFBibTeX XMLCite \textit{M. Zippin}, Lect. Notes Math. None, 78--84 (1991; Zbl 0757.47006)
Brudnyj, Yu A.; Shvartsman, P. A. The traces of differentiable functions to closed subsets of \(\mathbb{R}{}^ n\). (English) Zbl 0754.46030 Function spaces, Proc. 2nd Int. Conf., Poznań/Pol. 1989, Teubner-Texte Math. 120, 206-210 (1991). Reviewer: Yu.A.Brudnyj (Haifa) MSC: 46E35 26B35 PDFBibTeX XMLCite \textit{Y. A. Brudnyj} and \textit{P. A. Shvartsman}, in: Near convexity in Banach spaces. . 206--210 (1991; Zbl 0754.46030)
Semenov, E. M.; Shneiberg, I. Ya. Planar faces of operator spaces in \(L_ p\). (English) Zbl 0771.47004 Topics in matrix and operator theory, Proc. Workshop, Rotterdam/Neth. 1989, Oper. Theory, Adv. Appl. 50, 307-315 (1991). Reviewer: V.N.Gusyatnikova (Pereslavl-Zalessky) MSC: 47A30 46E30 47A20 47L07 PDFBibTeX XMLCite \textit{E. M. Semenov} and \textit{I. Ya. Shneiberg}, in: Wiener-Hopf factorization in the inverse scattering theory for the \(n\)-D Schrödinger equation. . 307--315 (1991; Zbl 0771.47004)
Alpay, Daniel; Bruinsma, Piet; Dijksma, Aad; de Snoo, Henk Interpolation problems, extensions of symmetric operators and reproducing kernel spaces. I. (English) Zbl 0737.47016 Topics in matrix and operator theory, Proc. Workshop, Rotterdam/Neth. 1989, Oper. Theory, Adv. Appl. 50, 35-82 (1991). Reviewer: J.Durdil (Praha) MSC: 47A57 47A20 46E22 40A05 PDFBibTeX XMLCite \textit{D. Alpay} et al., in: Wiener-Hopf factorization in the inverse scattering theory for the \(n\)-D Schrödinger equation. . 35--82 (1991; Zbl 0737.47016)
Conway, John B. Towards a functional calculus for subnormal tuples: The minimal normal extension. (English) Zbl 0754.47018 Trans. Am. Math. Soc. 326, No. 2, 543-567 (1991). Reviewer: G.Garske (Hagen) MSC: 47B20 47A60 47A80 32A35 47B38 PDFBibTeX XMLCite \textit{J. B. Conway}, Trans. Am. Math. Soc. 326, No. 2, 543--567 (1991; Zbl 0754.47018) Full Text: DOI
Ulmer, Felix Design of algorithms for the computation of Liouvillian solutions of ordinary differential equations. (Entwurf von Algorithmen zur Berechnung Liouvillescher Lösungen von linearen gewöhnlichen Differentialgleichungen.) (German) Zbl 1038.12501 Hamburg: Verlag Dr. Kovač (ISBN 3-925630-93-7/pbk). iii, 123 S. (1991). MSC: 12H05 12H20 34A30 68W30 12Y05 PDFBibTeX XMLCite \textit{F. Ulmer}, Entwurf von Algorithmen zur Berechnung Liouvillescher Lösungen von linearen ge\-wöhn\-li\-chen Differentialgleichungen. Hamburg: Verlag Dr. Kovač (1991; Zbl 1038.12501)
Orbán, B.; Vasiu, Angela On the generalisation of anchor introduced by F. Radó. (English) Zbl 0768.51002 Prepr., ”Babeș-Bolyai” Univ., Fac. Math. Phys., Res. Semin. 1991, No. 2, 79-88 (1991). Reviewer: H.Szambien (Garbsen) MSC: 51A30 51A10 51A45 51A40 PDFBibTeX XMLCite \textit{B. Orbán} and \textit{A. Vasiu}, Prepr., ``Babeș-Bolyai'' Univ., Fac. Math. Phys., Res. Semin. 1991, No. 2, 79--88 (1991; Zbl 0768.51002)
Curto, Raúl E.; Putinar, Mihai Existence of non-subnormal polynomially hyponormal operators. (English) Zbl 0758.47027 Bull. Am. Math. Soc., New Ser. 25, No. 2, 373-378 (1991). Reviewer: J.L.R.Webb (Glasgow) MSC: 47B20 47A65 47A60 46A22 52A07 PDFBibTeX XMLCite \textit{R. E. Curto} and \textit{M. Putinar}, Bull. Am. Math. Soc., New Ser. 25, No. 2, 373--378 (1991; Zbl 0758.47027) Full Text: DOI
Ball, Joseph A.; Gohberg, Israel; Rodman, Leiba Nehari interpolation problem for rational matrix functions: The generic case. (English) Zbl 0768.41001 \(H_{\infty}\)-control theory, Lect. 2nd Sess., Como/Italy 1990, Lect. Notes Math. 1496, 277-308 (1991). Reviewer: A.Lukashov (Saratov) MSC: 41A05 30E05 47A57 PDFBibTeX XMLCite \textit{J. A. Ball} et al., Lect. Notes Math. 1496, 277--308 (1991; Zbl 0768.41001)
Wong, M. W. Minimal and maximal operator theory with applications. (English) Zbl 0742.47004 Can. J. Math. 43, No. 3, 617-627 (1991). Reviewer: P.C.Sinha (Patna) MSC: 47A20 47A50 47G30 47B25 PDFBibTeX XMLCite \textit{M. W. Wong}, Can. J. Math. 43, No. 3, 617--627 (1991; Zbl 0742.47004) Full Text: DOI
Molnar, Lajos A note on Saworotnow’s representation theorem on positive definite functions. (English) Zbl 0780.46035 Houston J. Math. 17, No. 1, 89-99 (1991). MSC: 46K15 43A35 46K10 60G10 47A57 PDFBibTeX XMLCite \textit{L. Molnar}, Houston J. Math. 17, No. 1, 89--99 (1991; Zbl 0780.46035)
Deshommes, Bernadette Binomial powers in a cubic field. (Puissances binomiales dans un corps cubique.) (French) Zbl 0743.11007 Diss. Math. 312, 57 p. (1991). Reviewer: F.Beukers (Utrecht) MSC: 11B37 11S15 PDFBibTeX XMLCite \textit{B. Deshommes}, Diss. Math. 312, 57 (1991; Zbl 0743.11007)
Singer, Michael F. Liouvillian solutions of linear differential equations with Liouvillian coefficients. (English) Zbl 0776.12002 J. Symb. Comput. 11, No. 3, 251-273 (1991). MSC: 12H05 34A30 68W30 PDFBibTeX XMLCite \textit{M. F. Singer}, J. Symb. Comput. 11, No. 3, 251--273 (1991; Zbl 0776.12002) Full Text: DOI
Babuška, I.; Craig, A.; Mandel, J.; Pitkäranta, J. Efficient preconditioning for the \(p\)-version finite element method in two dimensions. (English) Zbl 0754.65083 SIAM J. Numer. Anal. 28, No. 3, 624-661 (1991). Reviewer: T.Potra (Cluj-Napoca) MSC: 65N30 65F35 65F10 65N55 35J25 PDFBibTeX XMLCite \textit{I. Babuška} et al., SIAM J. Numer. Anal. 28, No. 3, 624--661 (1991; Zbl 0754.65083) Full Text: DOI
Bercovici, Hari; Foias, Ciprian; Tannenbaum, Allen A spectral commutant lifting theorem. (English) Zbl 0738.47006 Trans. Am. Math. Soc. 325, No. 2, 741-763 (1991). Reviewer: H.Schröder (Dortmund) MSC: 47A20 30E05 47A57 93C05 PDFBibTeX XMLCite \textit{H. Bercovici} et al., Trans. Am. Math. Soc. 325, No. 2, 741--763 (1991; Zbl 0738.47006) Full Text: DOI
Babescu, Gh. On the single-valued extension property of linear bounded operators in Banach spaces. (English) Zbl 0913.47041 Bul. Ştiinţ. Teh. Univ. Teh. Timiş., Ser. Mat.-Fiz. 36(50), 5-9 (1991). Reviewer: O.Lipovan (Timişoara) MSC: 47E05 47A50 47D09 PDFBibTeX XMLCite \textit{Gh. Babescu}, Bul. Științ. Teh. Univ. Teh. Timiș., Ser. Mat.-Fiz. 36(50), 5--9 (1991; Zbl 0913.47041)
Özbay, Hitay; Tannenbaum, Allen On the structure of suboptimal \(H^ \infty\) controllers in the sensitivity minimization problem for distributed stable plants. (English) Zbl 0745.93017 Automatica 27, No. 2, 293-305 (1991). Reviewer: J.A.Ball (Blacksburg) MSC: 93B36 93B35 47A57 PDFBibTeX XMLCite \textit{H. Özbay} and \textit{A. Tannenbaum}, Automatica 27, No. 2, 293--305 (1991; Zbl 0745.93017) Full Text: DOI
Dinca, G.; Mateescu, D. Friedrichs type extension theorems for multivalued operators. (English) Zbl 0896.49006 Bull. Cl. Sci., VI. Sér., Acad. R. Belg. 2, No. 1-3, 105-121 (1991). Reviewer: Dominique Aze (MR 93h:49026) MSC: 49J45 47H04 49J52 49N10 PDFBibTeX XMLCite \textit{G. Dinca} and \textit{D. Mateescu}, Bull. Cl. Sci., VI. Sér., Acad. R. Belg. 2, No. 1--3, 105--121 (1991; Zbl 0896.49006)
Shevchenko, Yu. I. Connection in an extension of a principal bundle. (Russian) Zbl 0895.53030 Differ. Geom. Mnogoobr. Figur 22, 117-127 (1991). Reviewer: A.P.Shirokov (Kazan’) MSC: 53C05 55R10 PDFBibTeX XMLCite \textit{Yu. I. Shevchenko}, Differ. Geom. Mnogoobr. Figur 22, 117--127 (1991; Zbl 0895.53030)
Kolesnikov, E. V.; Kusraev, A. G. A functional realization of the Lebesgue extension. (English. Russian original) Zbl 0778.47029 Sib. Math. J. 32, No. 1, 154-157 (1991); translation from Sib. Mat. Zh. 32, No. 1(185), 190-194 (1991). MSC: 47B65 46A40 46E30 PDFBibTeX XMLCite \textit{E. V. Kolesnikov} and \textit{A. G. Kusraev}, Sib. Math. J. 32, No. 1, 154--157 (1991; Zbl 0778.47029); translation from Sib. Mat. Zh. 32, No. 1(185), 190--194 (1991) Full Text: DOI
Ikebe, Teruo; Shimada, Shin-ichi Spectral and scattering theory for the Schrödinger operators with penetrable wall potentials. (English) Zbl 0736.47007 J. Math. Kyoto Univ. 31, No. 1, 219-258 (1991). Reviewer: M.Perelmuter (Kiev) MSC: 47A40 PDFBibTeX XMLCite \textit{T. Ikebe} and \textit{S.-i. Shimada}, J. Math. Kyoto Univ. 31, No. 1, 219--258 (1991; Zbl 0736.47007) Full Text: DOI