Piatek, Bozena “Lion-man” game and the fixed point property in Hilbert spaces. (English) Zbl 07742478 Geom. Dedicata 217, No. 6, Paper No. 102, 7 p. (2023). MSC: 91A24 91A23 49N75 47H10 46C99 PDF BibTeX XML Cite \textit{B. Piatek}, Geom. Dedicata 217, No. 6, Paper No. 102, 7 p. (2023; Zbl 07742478) Full Text: DOI
Watanabe, Keiichi Möbius gyrovector spaces and functional analysis. (English) Zbl 07741020 RIMS Kôkyûroku Bessatsu B93, 223-237 (2023). MSC: 46C05 20N05 46C99 46T99 47A30 51M10 83A05 PDF BibTeX XML Cite \textit{K. Watanabe}, RIMS Kôkyûroku Bessatsu B93, 223--237 (2023; Zbl 07741020) Full Text: Link
Ren, Conghui; Wu, Deyu Numerical radius inequalities for indefinite inner product space operators. (English) Zbl 07738756 Adv. Oper. Theory 8, No. 2, Paper No. 18, 18 p. (2023). MSC: 47A12 47B50 47A63 46C20 PDF BibTeX XML Cite \textit{C. Ren} and \textit{D. Wu}, Adv. Oper. Theory 8, No. 2, Paper No. 18, 18 p. (2023; Zbl 07738756) Full Text: DOI
Kobos, Tomasz; Wójcik, Paweł On non-linear mappings preserving the semi-inner product. (English) Zbl 07732358 Result. Math. 78, No. 6, Paper No. 214, 17 p. (2023). MSC: 46B20 46C50 46B04 PDF BibTeX XML Cite \textit{T. Kobos} and \textit{P. Wójcik}, Result. Math. 78, No. 6, Paper No. 214, 17 p. (2023; Zbl 07732358) Full Text: DOI arXiv
Amyari, M.; Torabian, M.; Khibary, M. Moradian Approximate isosceles \(\omega\)-orthogonality and approximate \(\omega\)-parallelism. (English) Zbl 07730203 Bol. Soc. Mat. Mex., III. Ser. 29, No. 3, Paper No. 59, 15 p. (2023). MSC: 47A12 46B20 46C05 PDF BibTeX XML Cite \textit{M. Amyari} et al., Bol. Soc. Mat. Mex., III. Ser. 29, No. 3, Paper No. 59, 15 p. (2023; Zbl 07730203) Full Text: DOI
Csirmaz, Laszlo Infinite probabilistic secret sharing. (English) Zbl 07729607 Kybernetika 59, No. 2, 179-197 (2023). MSC: 60B05 94A62 46C99 54D10 PDF BibTeX XML Cite \textit{L. Csirmaz}, Kybernetika 59, No. 2, 179--197 (2023; Zbl 07729607) Full Text: DOI arXiv
Vidal, Sebastian J.; Cadavid, Paula; Rodriguez, Pablo M. Hilbert evolution algebras and its connection with discrete-time Markov chains. (English) Zbl 07726370 Indian J. Pure Appl. Math. 54, No. 3, 883-894 (2023). MSC: 17D92 46C99 60J10 PDF BibTeX XML Cite \textit{S. J. Vidal} et al., Indian J. Pure Appl. Math. 54, No. 3, 883--894 (2023; Zbl 07726370) Full Text: DOI arXiv
Villar, Osmin Ferrer; Ortiz, Edilberto Arroyo; Martínez, José Naranjo Atomic systems in Krein spaces. (English) Zbl 07717023 Turk. J. Math. 47, No. 5, 1335-1349 (2023). MSC: 46C20 42C15 PDF BibTeX XML Cite \textit{O. F. Villar} et al., Turk. J. Math. 47, No. 5, 1335--1349 (2023; Zbl 07717023) Full Text: DOI
Juršėnas, Rytis On the similarity of boundary triples of symmetric operators in Krein spaces. (English) Zbl 07708075 Complex Anal. Oper. Theory 17, No. 5, Paper No. 72, 39 p. (2023). MSC: 47A06 47B50 47B25 46C20 PDF BibTeX XML Cite \textit{R. Juršėnas}, Complex Anal. Oper. Theory 17, No. 5, Paper No. 72, 39 p. (2023; Zbl 07708075) Full Text: DOI arXiv
Cabello Sánchez, Félix; Cabello Sánchez, Javier Dynamics of the semigroup of contractive automorphisms of Banach spaces. (English) Zbl 07707865 J. Math. Anal. Appl. 526, No. 2, Article ID 127233, 17 p. (2023). MSC: 46B04 46Cxx 46Exx PDF BibTeX XML Cite \textit{F. Cabello Sánchez} and \textit{J. Cabello Sánchez}, J. Math. Anal. Appl. 526, No. 2, Article ID 127233, 17 p. (2023; Zbl 07707865) Full Text: DOI arXiv
Chang, Mengmeng; Miao, Yu Generalized weak laws of large numbers in Hilbert spaces. (English) Zbl 1517.60035 Stat. Probab. Lett. 197, Article ID 109830, 10 p. (2023). MSC: 60F15 60B12 46C05 PDF BibTeX XML Cite \textit{M. Chang} and \textit{Y. Miao}, Stat. Probab. Lett. 197, Article ID 109830, 10 p. (2023; Zbl 1517.60035) Full Text: DOI
Ashino, Ryuichi; Mandai, Takeshi; Morimoto, Akira Inequalities on the closeness of two vectors in a Parseval frame. (English) Zbl 07703472 Japan J. Ind. Appl. Math. 40, No. 2, 1329-1340 (2023). MSC: 42C15 46C99 15A03 PDF BibTeX XML Cite \textit{R. Ashino} et al., Japan J. Ind. Appl. Math. 40, No. 2, 1329--1340 (2023; Zbl 07703472) Full Text: DOI
Lindenhovius, Bert; Vetterlein, Thomas A characterisation of orthomodular spaces by Sasaki maps. (English) Zbl 07703210 Int. J. Theor. Phys. 62, No. 3, Paper No. 59, 14 p. (2023). MSC: 81-XX 83-XX 81P10 06C15 46C05 PDF BibTeX XML Cite \textit{B. Lindenhovius} and \textit{T. Vetterlein}, Int. J. Theor. Phys. 62, No. 3, Paper No. 59, 14 p. (2023; Zbl 07703210) Full Text: DOI arXiv
Alexander, Stephon; Herczeg, Gabriel; Freidel, Laurent An inner product for 4D quantum gravity and the Chern-Simons-Kodama state. (English) Zbl 07701747 Classical Quantum Gravity 40, No. 14, Article ID 145010, 23 p. (2023). MSC: 83-XX 81-XX PDF BibTeX XML Cite \textit{S. Alexander} et al., Classical Quantum Gravity 40, No. 14, Article ID 145010, 23 p. (2023; Zbl 07701747) Full Text: DOI arXiv
Niezgoda, Marek Refinement of von Neumann-type inequalities on product Eaton triples. (English) Zbl 07692351 Electron. J. Linear Algebra 39, 199-213 (2023). MSC: 15A45 15A63 22E15 20G05 PDF BibTeX XML Cite \textit{M. Niezgoda}, Electron. J. Linear Algebra 39, 199--213 (2023; Zbl 07692351) Full Text: Link
Gürdal, M.; Garayev, M.; Tapdigoglu, R.; Altıntaş, M. Some applications of the \(\alpha\)-Duhamel product. (English) Zbl 07687052 J. Anal. 31, No. 2, 1557-1572 (2023). MSC: 46J15 46E15 PDF BibTeX XML Cite \textit{M. Gürdal} et al., J. Anal. 31, No. 2, 1557--1572 (2023; Zbl 07687052) Full Text: DOI
Xu, Xiao-Ming; Huang, Yi; Li, Yuan General explicit descriptions for two classes of symmetries involving idempotents. (English) Zbl 07683816 Linear Multilinear Algebra 71, No. 3, 457-471 (2023). MSC: 47A05 47B65 46C20 PDF BibTeX XML Cite \textit{X.-M. Xu} et al., Linear Multilinear Algebra 71, No. 3, 457--471 (2023; Zbl 07683816) Full Text: DOI
Shateri, T. L.; Mohebbi Najmabad, B. On the Bohr and Selberg inequalities in \(2\)-\(*\)-inner product spaces. (English) Zbl 07683811 Linear Multilinear Algebra 71, No. 3, 348-362 (2023). MSC: 46C50 26D15 PDF BibTeX XML Cite \textit{T. L. Shateri} and \textit{B. Mohebbi Najmabad}, Linear Multilinear Algebra 71, No. 3, 348--362 (2023; Zbl 07683811) Full Text: DOI
Bagarello, Fabio; Corso, Rosario Some perturbation results for quasi-bases and other sequences of vectors. (English) Zbl 1512.46021 J. Math. Phys. 64, No. 4, Article ID 043502, 14 p. (2023). MSC: 46C05 46B15 42C15 81Q12 81R30 47A10 PDF BibTeX XML Cite \textit{F. Bagarello} and \textit{R. Corso}, J. Math. Phys. 64, No. 4, Article ID 043502, 14 p. (2023; Zbl 1512.46021) Full Text: DOI arXiv
Ghosh, Prasenjit; Samanta, T. K. Generalized Riesz representation theorem in \(n\)-Hilbert space. (English) Zbl 07674941 Jordan J. Math. Stat. 16, No. 1, 99-115 (2023). MSC: 41A65 41A15 46B07 46B25 PDF BibTeX XML Cite \textit{P. Ghosh} and \textit{T. K. Samanta}, Jordan J. Math. Stat. 16, No. 1, 99--115 (2023; Zbl 07674941) Full Text: DOI arXiv
Brezhnev, Yu. V. Why and whence the Hilbert space in quantum theory? (English) Zbl 07673051 J. Geom. Phys. 187, Article ID 104779, 15 p. (2023). MSC: 81P05 46C05 81-03 PDF BibTeX XML Cite \textit{Yu. V. Brezhnev}, J. Geom. Phys. 187, Article ID 104779, 15 p. (2023; Zbl 07673051) Full Text: DOI arXiv
Magomed-Kasumov, M. G. The uniform convergence of Fourier series in a system of polynomials orthogonal in the sense of Sobolev and associated to Jacobi polynomials. (English. Russian original) Zbl 1510.42006 Sib. Math. J. 64, No. 2, 338-346 (2023); translation from Sib. Mat. Zh. 64, No. 2, 339-349 (2023). MSC: 42A20 46E35 PDF BibTeX XML Cite \textit{M. G. Magomed-Kasumov}, Sib. Math. J. 64, No. 2, 338--346 (2023; Zbl 1510.42006); translation from Sib. Mat. Zh. 64, No. 2, 339--349 (2023) Full Text: DOI
Karmakar, Shibashis \(J\)-fusion frame operator for Krein spaces. (English) Zbl 07667028 J. Anal. 31, No. 1, 633-644 (2023). MSC: 46C20 46C05 47B50 PDF BibTeX XML Cite \textit{S. Karmakar}, J. Anal. 31, No. 1, 633--644 (2023; Zbl 07667028) Full Text: DOI arXiv
Agrawal, Gunjan; Deepanshi Fundamental group and fine topology on Minkowski space. (English) Zbl 07656150 Rep. Math. Phys. 91, No. 1, 39-44 (2023). MSC: 20-XX 22-XX PDF BibTeX XML Cite \textit{G. Agrawal} and \textit{Deepanshi}, Rep. Math. Phys. 91, No. 1, 39--44 (2023; Zbl 07656150) Full Text: DOI
Znojil, Miloslav Non-stationary quantum mechanics in hybrid non-Hermitian interaction representation. (English) Zbl 07654280 Phys. Lett., A 462, Article ID 128655, 10 p. (2023). MSC: 81Q12 35J10 46C05 35Q41 93C30 81-10 PDF BibTeX XML Cite \textit{M. Znojil}, Phys. Lett., A 462, Article ID 128655, 10 p. (2023; Zbl 07654280) Full Text: DOI arXiv
Conde, Cristian; Minculete, Nicuşor; Moradi, Hamid Reza; Sababheh, Mohammad Norm inequalities via convex and log-convex functions. (English) Zbl 1516.46008 Mediterr. J. Math. 20, No. 1, Paper No. 6, 21 p. (2023). MSC: 46B20 46C05 26D15 PDF BibTeX XML Cite \textit{C. Conde} et al., Mediterr. J. Math. 20, No. 1, Paper No. 6, 21 p. (2023; Zbl 1516.46008) Full Text: DOI
Fu, Yuankang; Li, Yongjin The relations between the von Neumann-Jordan type constant and some geometric properties of Banach spaces. (English) Zbl 1515.46008 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 117, No. 1, Paper No. 25, 16 p. (2023). MSC: 46B20 46C05 PDF BibTeX XML Cite \textit{Y. Fu} and \textit{Y. Li}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 117, No. 1, Paper No. 25, 16 p. (2023; Zbl 1515.46008) Full Text: DOI
Martin-Dussaud, Pierre; Carette, Titouan; Głowacki, Jan; Zatloukal, Vaclav; Zalamea, Federico Fact-nets: towards a mathematical framework for relational quantum mechanics. (English) Zbl 07644554 Found. Phys. 53, No. 1, Paper No. 26, 33 p. (2023). MSC: 81P05 46C05 PDF BibTeX XML Cite \textit{P. Martin-Dussaud} et al., Found. Phys. 53, No. 1, Paper No. 26, 33 p. (2023; Zbl 07644554) Full Text: DOI arXiv
Krishnaswamy, D.; Sindhuja, K. On n-power hyponormal operators in Minkowski space. (English) Zbl 07729937 Poincare J. Anal. Appl. 9, No. 1, 63-68 (2022). MSC: 15A09 47B20 46C20 PDF BibTeX XML Cite \textit{D. Krishnaswamy} and \textit{K. Sindhuja}, Poincare J. Anal. Appl. 9, No. 1, 63--68 (2022; Zbl 07729937) Full Text: Link
Frolkina, Olga Most Cantor sets in \(\mathbb{R}^N\) are in general position with respect to all projections. (English) Zbl 07711293 Bull. Pol. Acad. Sci., Math. 70, No. 1, 53-61 (2022). MSC: 54B20 54E52 54C25 46C05 54F45 PDF BibTeX XML Cite \textit{O. Frolkina}, Bull. Pol. Acad. Sci., Math. 70, No. 1, 53--61 (2022; Zbl 07711293) Full Text: DOI arXiv
Johnson, Kyler S.; Kozdron, Michael J. On a quantum martingale convergence theorem. (English) Zbl 07656049 Int. J. Quantum Inf. 20, No. 8, Article ID 2250028, 17 p. (2022). MSC: 81S05 28B05 47B65 60B11 60G44 81P45 81P15 46C05 28A33 PDF BibTeX XML Cite \textit{K. S. Johnson} and \textit{M. J. Kozdron}, Int. J. Quantum Inf. 20, No. 8, Article ID 2250028, 17 p. (2022; Zbl 07656049) Full Text: DOI arXiv
Moghaddam, Sadaf Fakri; Mirmostafaee, Alireza Kamel Numerical radius inequalities for Hilbert \(C^{*}\)-modules. (English) Zbl 07655826 Math. Bohem. 147, No. 4, 547-566 (2022). MSC: 47A12 46C05 47C10 PDF BibTeX XML Cite \textit{S. F. Moghaddam} and \textit{A. K. Mirmostafaee}, Math. Bohem. 147, No. 4, 547--566 (2022; Zbl 07655826) Full Text: DOI
Baklouti, Hamadi; Namouri, Sirine Closed operators in semi-Hilbertian spaces. (English) Zbl 07638913 Linear Multilinear Algebra 70, No. 20, 5847-5858 (2022). MSC: 47A05 46C05 PDF BibTeX XML Cite \textit{H. Baklouti} and \textit{S. Namouri}, Linear Multilinear Algebra 70, No. 20, 5847--5858 (2022; Zbl 07638913) Full Text: DOI
Felipe-Sosa, Raúl; Felipe, Raúl \(J\)-states and quantum channels between indefinite metric spaces. (English) Zbl 1508.81071 Quantum Inf. Process. 21, No. 4, Paper No. 139, 32 p. (2022). MSC: 81P16 15B48 46C20 81P45 81P47 PDF BibTeX XML Cite \textit{R. Felipe-Sosa} and \textit{R. Felipe}, Quantum Inf. Process. 21, No. 4, Paper No. 139, 32 p. (2022; Zbl 1508.81071) Full Text: DOI arXiv
Alonso, Javier; Martini, Horst; Wu, Senlin Orthogonality types in normed linear spaces. (English) Zbl 1503.46009 Papadopoulos, Athanase (ed.), Surveys in geometry I. Cham: Springer. 97-170 (2022). Reviewer: Dirk Keppens (Gent) MSC: 46B20 46C15 51F20 52A21 PDF BibTeX XML Cite \textit{J. Alonso} et al., in: Surveys in geometry I. Cham: Springer. 97--170 (2022; Zbl 1503.46009) Full Text: DOI
Xie, Huayou; Liu, Qi; Li, Yongjin Two geometric constants related to isosceles orthogonality on Banach space. (English) Zbl 1513.46031 Aust. J. Math. Anal. Appl. 19, No. 2, Article No. 9, 12 p. (2022). MSC: 46B20 46C15 PDF BibTeX XML Cite \textit{H. Xie} et al., Aust. J. Math. Anal. Appl. 19, No. 2, Article No. 9, 12 p. (2022; Zbl 1513.46031) Full Text: Link
Borodin, Petr A.; Kopecká, Eva Sequences of \(m\)-term deviations in Hilbert space. (English) Zbl 07612172 J. Approx. Theory 284, Article ID 105821, 19 p. (2022). MSC: 41A65 41A20 41A25 46C05 PDF BibTeX XML Cite \textit{P. A. Borodin} and \textit{E. Kopecká}, J. Approx. Theory 284, Article ID 105821, 19 p. (2022; Zbl 07612172) Full Text: DOI arXiv
Polo Ojito, Danilo; Sanabria, Jose; Ospino Buelvas, Yina A Fredholm theory on Krein spaces and its application to Weyl-type theorems and homogeneous equations. (English) Zbl 1511.47049 Turk. J. Math. 46, No. 7, 2677-2689 (2022). MSC: 47B50 46C20 47A53 47A10 PDF BibTeX XML Cite \textit{D. Polo Ojito} et al., Turk. J. Math. 46, No. 7, 2677--2689 (2022; Zbl 1511.47049) Full Text: DOI
Levent, Halise; Yilmaz, Yılmaz Analysis of signals with inexact data by using interval-valued functions. (English) Zbl 1505.94017 J. Anal. 30, No. 4, 1635-1651 (2022). MSC: 94A12 28B20 PDF BibTeX XML Cite \textit{H. Levent} and \textit{Y. Yilmaz}, J. Anal. 30, No. 4, 1635--1651 (2022; Zbl 1505.94017) Full Text: DOI
Matvejchuk, Marjan; Vladova, Elena Strong rojections in Hilbert space and quantum logic. (English) Zbl 1514.81012 Int. J. Theor. Phys. 61, No. 9, Paper No. 237, 14 p. (2022). MSC: 81P10 03G12 06C15 51F20 46C05 PDF BibTeX XML Cite \textit{M. Matvejchuk} and \textit{E. Vladova}, Int. J. Theor. Phys. 61, No. 9, Paper No. 237, 14 p. (2022; Zbl 1514.81012) Full Text: DOI
Tapanyo, Wanchai; Ratiphaphongthon, Wachiraphong; Arunchai, Areerat Completion of \(C^*\)-algebra-valued metric spaces. (English) Zbl 1501.54017 Thai J. Math. 20, No. 3, 1119-1136 (2022). MSC: 54E35 54E50 54D35 46B99 46L07 PDF BibTeX XML Cite \textit{W. Tapanyo} et al., Thai J. Math. 20, No. 3, 1119--1136 (2022; Zbl 1501.54017) Full Text: arXiv Link
Hejazian, Shirin; Safarizadeh, Mozhdeh Bijections on the unit ball of \(B(H)\) preserving \({}^*\)-Jordan triple product. (English) Zbl 1503.47054 Sahand Commun. Math. Anal. 19, No. 3, 125-139 (2022). MSC: 47B49 46C20 46N50 PDF BibTeX XML Cite \textit{S. Hejazian} and \textit{M. Safarizadeh}, Sahand Commun. Math. Anal. 19, No. 3, 125--139 (2022; Zbl 1503.47054) Full Text: DOI
Dyakonov, Konstantin M. Interpolation and duality in spaces of pseudocontinuable functions. (English) Zbl 1503.30120 Math. Z. 302, No. 3, 1477-1488 (2022). Reviewer: Francesc Tugores (Ourense) MSC: 30H10 30E05 30J05 30J10 PDF BibTeX XML Cite \textit{K. M. Dyakonov}, Math. Z. 302, No. 3, 1477--1488 (2022; Zbl 1503.30120) Full Text: DOI arXiv
Torabian, M.; Amyari, M.; Moradian Khibary, M. More on \(\omega\)-orthogonalities and \(\omega\)-parallelism. (English) Zbl 07596075 Linear Multilinear Algebra 70, No. 14, 2619-2628 (2022). MSC: 47A12 47L05 46C05 PDF BibTeX XML Cite \textit{M. Torabian} et al., Linear Multilinear Algebra 70, No. 14, 2619--2628 (2022; Zbl 07596075) Full Text: DOI arXiv
Huo, Qinghai; Ren, Guangbin Para-linearity as the nonassociative counterpart of linearity. (English) Zbl 07596003 J. Geom. Anal. 32, No. 12, Paper No. 304, 30 p. (2022). Reviewer: Sergey Ludkovsky (Moskva) MSC: 46S05 46C05 17A35 PDF BibTeX XML Cite \textit{Q. Huo} and \textit{G. Ren}, J. Geom. Anal. 32, No. 12, Paper No. 304, 30 p. (2022; Zbl 07596003) Full Text: DOI arXiv
Erceg, Marko; Soni, Sandeep Kumar Classification of classical Friedrichs differential operators: one-dimensional scalar case. (English) Zbl 1498.35170 Commun. Pure Appl. Anal. 21, No. 10, 3499-3527 (2022). MSC: 35F45 35F46 46C05 46C20 47A05 47B28 PDF BibTeX XML Cite \textit{M. Erceg} and \textit{S. K. Soni}, Commun. Pure Appl. Anal. 21, No. 10, 3499--3527 (2022; Zbl 1498.35170) Full Text: DOI arXiv
Simons, Stephen \(m\)th roots of the identity operator and the geometry conjecture. (English) Zbl 1502.46016 Proc. Am. Math. Soc. 150, No. 10, 4315-4323 (2022). Reviewer: Stefan Cobzaş (Cluj-Napoca) MSC: 46C05 46C07 49J35 46A22 47H05 47H10 PDF BibTeX XML Cite \textit{S. Simons}, Proc. Am. Math. Soc. 150, No. 10, 4315--4323 (2022; Zbl 1502.46016) Full Text: DOI arXiv
Soibam, Romen Meitei \(n\)-boundedness and \(n\)-continuity of linear operators. (English) Zbl 07589390 J. Indones. Math. Soc. 28, No. 2, 147-157 (2022). MSC: 47A05 47A30 46B20 46C05 PDF BibTeX XML Cite \textit{R. M. Soibam}, J. Indones. Math. Soc. 28, No. 2, 147--157 (2022; Zbl 07589390) Full Text: Link
Bounader, Nordine Selberg type inequalities in 2-\(^\ast\)-semi inner product space and its applications. (English) Zbl 1505.46024 Palest. J. Math. 11, No. 2, 136-142 (2022). MSC: 46C50 47A63 PDF BibTeX XML Cite \textit{N. Bounader}, Palest. J. Math. 11, No. 2, 136--142 (2022; Zbl 1505.46024) Full Text: Link
Bolotin, Arkady The paradox of classical reasoning. (English) Zbl 1507.81011 Found. Phys. 52, No. 4, Paper No. 87, 21 p. (2022). MSC: 81P05 81P10 03G12 46C05 03C55 PDF BibTeX XML Cite \textit{A. Bolotin}, Found. Phys. 52, No. 4, Paper No. 87, 21 p. (2022; Zbl 1507.81011) Full Text: DOI arXiv
Boudref, Mohamed Ahmed Inner product and Gegenbauer polynomials in Sobolev space. (English) Zbl 1513.42106 Vestn. Ross. Univ., Mat. 27, No. 138, 150-163 (2022). MSC: 42C10 46E35 PDF BibTeX XML Cite \textit{M. A. Boudref}, Vestn. Ross. Univ., Mat. 27, No. 138, 150--163 (2022; Zbl 1513.42106) Full Text: DOI MNR
Noethen, F. Well-separating common complements for sequences of subspaces of the same codimension are generic in Hilbert spaces. (English) Zbl 1513.46043 Anal. Math. 48, No. 3, 827-847 (2022). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 46C05 46B20 PDF BibTeX XML Cite \textit{F. Noethen}, Anal. Math. 48, No. 3, 827--847 (2022; Zbl 1513.46043) Full Text: DOI
Shakoory, Habib; Ahmadi, Reza; Behzadi, Naghi; Nami, Susan Control fusion frames in Hilbert spaces and their dual. (English) Zbl 1498.42050 J. Math. Ext. 16, No. 9, Paper No. 4, 18 p. (2022). Reviewer: Xiaosheng Zhuang (Hong Kong) MSC: 42C15 47A55 47A05 42C40 46C05 PDF BibTeX XML Cite \textit{H. Shakoory} et al., J. Math. Ext. 16, No. 9, Paper No. 4, 18 p. (2022; Zbl 1498.42050)
Bauschke, Heinz H.; Lal, Manish Krishan; Wang, Xianfu The projection onto the cross. (English) Zbl 1500.90051 Set-Valued Var. Anal. 30, No. 3, 997-1009 (2022). MSC: 90C26 41A50 46C05 90C33 PDF BibTeX XML Cite \textit{H. H. Bauschke} et al., Set-Valued Var. Anal. 30, No. 3, 997--1009 (2022; Zbl 1500.90051) Full Text: DOI arXiv
Ghribi, Salima; Jeridi, Nader; Rabaoui, Rchid On \((A,m)\)-isometric commuting tuples of operators on a Hilbert space. (English) Zbl 1507.47019 Linear Multilinear Algebra 70, No. 11, 2097-2116 (2022). MSC: 47A13 47B02 PDF BibTeX XML Cite \textit{S. Ghribi} et al., Linear Multilinear Algebra 70, No. 11, 2097--2116 (2022; Zbl 1507.47019) Full Text: DOI
Bounader, Nordine Selberg type inequalities in 2-\({}^\ast\)-semi inner product space and its applications. (English) Zbl 1501.46048 Palest. J. Math. 11, No. 1, 285-291 (2022). MSC: 46L08 47A63 46C50 PDF BibTeX XML Cite \textit{N. Bounader}, Palest. J. Math. 11, No. 1, 285--291 (2022; Zbl 1501.46048) Full Text: Link
Vetterlein, Thomas Transitivity and homogeneity of orthosets and inner-product spaces over subfields of \(\mathbb{R}\). (English) Zbl 1496.81024 Geom. Dedicata 216, No. 3, Paper No. 36, 24 p. (2022). MSC: 81P10 06C15 46C05 32M12 11E88 PDF BibTeX XML Cite \textit{T. Vetterlein}, Geom. Dedicata 216, No. 3, Paper No. 36, 24 p. (2022; Zbl 1496.81024) Full Text: DOI
Wójcik, Paweł When are maps preserving semi-inner products linear? (English) Zbl 1514.39015 Aequationes Math. 96, No. 3, 669-676 (2022). Reviewer: Nasrin Eghbali (Ardabil) MSC: 39B52 46C50 46B04 47J05 46B20 15A04 PDF BibTeX XML Cite \textit{P. Wójcik}, Aequationes Math. 96, No. 3, 669--676 (2022; Zbl 1514.39015) Full Text: DOI
Qian, Tao Positive-instantaneous frequency and approximation. (English) Zbl 1492.94036 Front. Math. China 17, No. 3, 337-371 (2022); translation from Adv. Math., Beijing 47, No. 3, 321–347 (2018). MSC: 94A12 42A50 30H10 30J05 30J10 32A50 PDF BibTeX XML Cite \textit{T. Qian}, Front. Math. China 17, No. 3, 337--371 (2022; Zbl 1492.94036); translation from Adv. Math., Beijing 47, No. 3, 321--347 (2018) Full Text: DOI
Grushka, Ya. I. On some properties of Hassani transforms. (English) Zbl 1505.83003 Mat. Stud. 57, No. 1, 79-91 (2022). MSC: 83A05 70B05 81R20 46C05 PDF BibTeX XML Cite \textit{Ya. I. Grushka}, Mat. Stud. 57, No. 1, 79--91 (2022; Zbl 1505.83003) Full Text: DOI
Xu, Xiaoming; Li, Yuan; Chen, Yong On the characterization of symmetries concerning \(J\)-contractive projections. (English) Zbl 1516.47073 Complex Anal. Oper. Theory 16, No. 3, Paper No. 47, 14 p. (2022). MSC: 47B50 47A05 47B65 46C20 PDF BibTeX XML Cite \textit{X. Xu} et al., Complex Anal. Oper. Theory 16, No. 3, Paper No. 47, 14 p. (2022; Zbl 1516.47073) Full Text: DOI
Daraby, B.; Delzendeh, F.; Rahimi, A. Some properties of fuzzy frame operator. (English) Zbl 1495.46062 Azerb. J. Math. 12, No. 1, 3-19 (2022). MSC: 46S40 47S40 54A40 03E72 PDF BibTeX XML Cite \textit{B. Daraby} et al., Azerb. J. Math. 12, No. 1, 3--19 (2022; Zbl 1495.46062) Full Text: Link
Okołów, Andrzej Hilbert spaces built over metrics of fixed signature. (English) Zbl 1510.83035 Classical Quantum Gravity 39, No. 6, Article ID 065003, 50 p. (2022). MSC: 83C45 46C05 54E50 37K65 PDF BibTeX XML Cite \textit{A. Okołów}, Classical Quantum Gravity 39, No. 6, Article ID 065003, 50 p. (2022; Zbl 1510.83035) Full Text: DOI arXiv
Bauer, Michel A quantum \(0\)-\(\infty\) law. (English) Zbl 1493.46018 SIGMA, Symmetry Integrability Geom. Methods Appl. 18, Paper 012, 12 p. (2022). MSC: 46B09 46C05 60J05 PDF BibTeX XML Cite \textit{M. Bauer}, SIGMA, Symmetry Integrability Geom. Methods Appl. 18, Paper 012, 12 p. (2022; Zbl 1493.46018) Full Text: DOI arXiv
Ghosh, Prasenjit; Samanta, Tapas Kumar Introduction of frame in tensor product of \(n\)-Hilbert spaces. (English) Zbl 1513.42120 Sahand Commun. Math. Anal. 18, No. 4, 1-18 (2021). MSC: 42C15 46C07 46C50 PDF BibTeX XML Cite \textit{P. Ghosh} and \textit{T. K. Samanta}, Sahand Commun. Math. Anal. 18, No. 4, 1--18 (2021; Zbl 1513.42120) Full Text: DOI arXiv
Rao, DPRV Subba; Gudepu, Rajesh On inner product over a lattice vector space. (English) Zbl 07540001 J. Int. Math. Virtual Inst. 11, No. 1, 69-84 (2021). MSC: 06-XX PDF BibTeX XML Cite \textit{D. S. Rao} and \textit{R. Gudepu}, J. Int. Math. Virtual Inst. 11, No. 1, 69--84 (2021; Zbl 07540001) Full Text: DOI
Bhanja, Aniket; Bhunia, Pintu; Paul, Kallol On generalized Davis-Wielandt radius inequalities of semi-Hilbertian space operators. (English) Zbl 1492.47007 Oper. Matrices 15, No. 4, 1201-1225 (2021). MSC: 47A08 47A12 46C05 47A30 47A50 PDF BibTeX XML Cite \textit{A. Bhanja} et al., Oper. Matrices 15, No. 4, 1201--1225 (2021; Zbl 1492.47007) Full Text: DOI arXiv
Ghosh, P.; Samanta, T. K. Atomic systems in \(n\)-Hilbert spaces and their tensor products. (English) Zbl 1499.42133 J. Linear Topol. Algebra 10, No. 4, 241-256 (2021). MSC: 42C15 46C07 46C50 PDF BibTeX XML Cite \textit{P. Ghosh} and \textit{T. K. Samanta}, J. Linear Topol. Algebra 10, No. 4, 241--256 (2021; Zbl 1499.42133) Full Text: arXiv
Watanabe, Keiichi On a notion of complex Möbius gyrovector spaces. (English) Zbl 1497.46029 Nihonkai Math. J. 32, No. 2, 111-131 (2021). MSC: 46C05 20N05 46C99 46T99 51M10 PDF BibTeX XML Cite \textit{K. Watanabe}, Nihonkai Math. J. 32, No. 2, 111--131 (2021; Zbl 1497.46029) Full Text: Link
Attia, Nourhane; Akgül, Ali; Seba, Djamila; Nour, Abdelkader Numerical solution of the fractional relaxation-oscillation equation by using reproducing kernel Hilbert space method. (English) Zbl 1499.34253 Int. J. Appl. Comput. Math. 7, No. 4, Paper No. 165, 21 p. (2021). MSC: 34C26 65L04 34A25 34A08 46E22 34C15 34E15 PDF BibTeX XML Cite \textit{N. Attia} et al., Int. J. Appl. Comput. Math. 7, No. 4, Paper No. 165, 21 p. (2021; Zbl 1499.34253) Full Text: DOI
Daraby, Bayaz; Delzendeh, Fataneh; Rahimi, Asghar Parseval’s equality in fuzzy normed linear spaces. (English) Zbl 1503.46058 Mathematica 63(86), No. 1, 47-57 (2021). MSC: 46S40 54A40 03E72 PDF BibTeX XML Cite \textit{B. Daraby} et al., Mathematica 63(86), No. 1, 47--57 (2021; Zbl 1503.46058) Full Text: DOI
Watanabe, Keiichi On Lipschitz continuity with respect to the Poincaré metric of linear contractions between Möbius gyrovector spaces. (English) Zbl 1495.47027 J. Inequal. Appl. 2021, Paper No. 166, 15 p. (2021). MSC: 47A30 20N05 46C05 46T99 51M10 83A05 PDF BibTeX XML Cite \textit{K. Watanabe}, J. Inequal. Appl. 2021, Paper No. 166, 15 p. (2021; Zbl 1495.47027) Full Text: DOI
Popova, N. D.; Strilets, O. V. Criteria for the existence of systems of subspaces related to a certain class of unicyclic graphs. (English. Ukrainian original) Zbl 1489.46031 Ukr. Math. J. 73, No. 4, 649-660 (2021); translation from Ukr. Mat. Zh. 73, No. 4, 556-565 (2021). MSC: 46C05 05C10 PDF BibTeX XML Cite \textit{N. D. Popova} and \textit{O. V. Strilets}, Ukr. Math. J. 73, No. 4, 649--660 (2021; Zbl 1489.46031); translation from Ukr. Mat. Zh. 73, No. 4, 556--565 (2021) Full Text: DOI
Bedford, Anthony Hamilton’s principle in continuum mechanics. (English) Zbl 1487.74002 Cham: Springer (ISBN 978-3-030-90305-3/hbk; 978-3-030-90308-4/pbk; 978-3-030-90306-0/ebook). xiv, 104 p. (2021). MSC: 74-01 74A99 76A99 70H25 PDF BibTeX XML Cite \textit{A. Bedford}, Hamilton's principle in continuum mechanics. Cham: Springer (2021; Zbl 1487.74002) Full Text: DOI
Kundu, Anirban; Bag, Tarapada; Nazmul, Sk. A new notion of orthogonality involving area and length. (English) Zbl 1489.46004 Math. Slovaca 71, No. 3, 731-748 (2021). MSC: 46A19 46B20 46C05 PDF BibTeX XML Cite \textit{A. Kundu} et al., Math. Slovaca 71, No. 3, 731--748 (2021; Zbl 1489.46004) Full Text: DOI
Anh, Vu T. N.; Hien, Nguyen T. T. On the weak laws of large numbers for weighted sums of dependent identically distributed random vectors in Hilbert spaces. (English) Zbl 1477.60044 Rend. Circ. Mat. Palermo (2) 70, No. 3, 1245-1256 (2021). MSC: 60F05 60B12 46C05 PDF BibTeX XML Cite \textit{V. T. N. Anh} and \textit{N. T. T. Hien}, Rend. Circ. Mat. Palermo (2) 70, No. 3, 1245--1256 (2021; Zbl 1477.60044) Full Text: DOI
Vetterlein, Thomas Orthogonality spaces arising from infinite-dimensional complex Hilbert spaces. (English) Zbl 1503.46020 Int. J. Theor. Phys. 60, No. 2, 727-738 (2021). MSC: 46C05 81P10 PDF BibTeX XML Cite \textit{T. Vetterlein}, Int. J. Theor. Phys. 60, No. 2, 727--738 (2021; Zbl 1503.46020) Full Text: DOI
Pablos Romo, Fernando On bounded finite potent operators on arbitrary Hilbert spaces. (English) Zbl 1487.47035 Bull. Malays. Math. Sci. Soc. (2) 44, No. 6, 4085-4107 (2021). MSC: 47B02 47A15 47B06 46C05 47L30 PDF BibTeX XML Cite \textit{F. Pablos Romo}, Bull. Malays. Math. Sci. Soc. (2) 44, No. 6, 4085--4107 (2021; Zbl 1487.47035) Full Text: DOI arXiv
Nuray, Fatih Statistical convergence of sequences of subspaces. (English) Zbl 1478.54005 Gulf J. Math. 10, No. 2, 31-37 (2021). MSC: 54B20 54A20 40A35 PDF BibTeX XML Cite \textit{F. Nuray}, Gulf J. Math. 10, No. 2, 31--37 (2021; Zbl 1478.54005) Full Text: Link
Gasimova, Gunel M. On the internal compactness of the space of regular solutions of one class of second order operator-differential equations with a discontinuous coefficient. (English) Zbl 1488.35146 J. Contemp. Appl. Math. 11, No. 1, 90-96 (2021). MSC: 35B99 35J15 46C05 PDF BibTeX XML Cite \textit{G. M. Gasimova}, J. Contemp. Appl. Math. 11, No. 1, 90--96 (2021; Zbl 1488.35146) Full Text: Link
Girela, Daniel Products of unbounded Bloch functions. (English) Zbl 1479.30024 Bastos, M. Amélia (ed.) et al., Operator theory, functional analysis and applications. Proceedings of the 30th international workshop on operator theory and its applications, IWOTA 2019, Lisbon, Portugal, July 22–26, 2019. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 282, 283-292 (2021). Reviewer: Oscar Blasco (València) MSC: 30D45 30H30 PDF BibTeX XML Cite \textit{D. Girela}, Oper. Theory: Adv. Appl. 282, 283--292 (2021; Zbl 1479.30024) Full Text: DOI arXiv
Borodin, P. A.; Konyagin, S. V. Projection greedy algorithm. (English. Russian original) Zbl 1478.41009 Math. Notes 110, No. 1, 16-25 (2021); translation from Mat. Zametki 110, No. 1, 17-28 (2021). Reviewer: Stefan Cobzaş (Cluj-Napoca) MSC: 41A65 46C05 47N10 PDF BibTeX XML Cite \textit{P. A. Borodin} and \textit{S. V. Konyagin}, Math. Notes 110, No. 1, 16--25 (2021; Zbl 1478.41009); translation from Mat. Zametki 110, No. 1, 17--28 (2021) Full Text: DOI
Azagra, Daniel; Mudarra, Carlos \(C^{1, \omega }\) extension formulas for \(1\)-jets on Hilbert spaces. (English) Zbl 1484.46081 Adv. Math. 389, Article ID 107928, 44 p. (2021). Reviewer: Michael Dymond (Leipzig) MSC: 46T20 26B05 26B25 46C99 PDF BibTeX XML Cite \textit{D. Azagra} and \textit{C. Mudarra}, Adv. Math. 389, Article ID 107928, 44 p. (2021; Zbl 1484.46081) Full Text: DOI arXiv
Heo, Jaeseong; Ji, Un Cig Krein space representations and Radon-Nikodým theorem for local \(\alpha \)-completely positive maps. (English) Zbl 1482.46026 Complex Anal. Oper. Theory 15, No. 4, Paper No. 79, 23 p. (2021). MSC: 46C20 46L07 46L65 47L30 PDF BibTeX XML Cite \textit{J. Heo} and \textit{U. C. Ji}, Complex Anal. Oper. Theory 15, No. 4, Paper No. 79, 23 p. (2021; Zbl 1482.46026) Full Text: DOI
Ghosh, P.; Samanta, T. K. Construction of frame relative to \(n\)-Hilbert space. (English) Zbl 1488.42137 J. Linear Topol. Algebra 10, No. 2, 117-130 (2021). MSC: 42C15 46C07 46C50 PDF BibTeX XML Cite \textit{P. Ghosh} and \textit{T. K. Samanta}, J. Linear Topol. Algebra 10, No. 2, 117--130 (2021; Zbl 1488.42137) Full Text: arXiv Link
Yan, Guanjie; Tan, Yunfei; Xu, Qingxiang Weighted Moore-Penrose inverses associated with weighted projections on indefinite inner product spaces. (English) Zbl 1481.46058 Bull. Iran. Math. Soc. 47, No. 4, 1121-1134 (2021). MSC: 46L08 15A09 47A05 PDF BibTeX XML Cite \textit{G. Yan} et al., Bull. Iran. Math. Soc. 47, No. 4, 1121--1134 (2021; Zbl 1481.46058) Full Text: DOI
Roopaei, Hadi; Başar, Feyzi On the spaces of Cesàro absolutely \(p\)-summable, null, and convergent sequences. (English) Zbl 1480.46006 Math. Methods Appl. Sci. 44, No. 5, 3670-3685 (2021). MSC: 46A45 46B45 46C05 47B37 47B39 40H05 PDF BibTeX XML Cite \textit{H. Roopaei} and \textit{F. Başar}, Math. Methods Appl. Sci. 44, No. 5, 3670--3685 (2021; Zbl 1480.46006) Full Text: DOI
Račkauskas, Alfredas Asymptotic normality of sums of Hilbert space valued random elements. (English) Zbl 1469.60018 Georgian Math. J. 28, No. 3, 459-469 (2021). Reviewer: Ecaterina Sava-Huss (Innsbruck) MSC: 60B12 60F05 46C05 PDF BibTeX XML Cite \textit{A. Račkauskas}, Georgian Math. J. 28, No. 3, 459--469 (2021; Zbl 1469.60018) Full Text: DOI
Krnić, Mario; Minculete, Nicuşor Bounds for the \(p\)-angular distance and characterizations of inner product spaces. (English) Zbl 1481.46012 Mediterr. J. Math. 18, No. 4, Paper No. 140, 22 p. (2021). MSC: 46B20 46C15 PDF BibTeX XML Cite \textit{M. Krnić} and \textit{N. Minculete}, Mediterr. J. Math. 18, No. 4, Paper No. 140, 22 p. (2021; Zbl 1481.46012) Full Text: DOI arXiv
Chattopadhyay, Arup; Sarkar, Jaydeb; Sarkar, Srijan Multiplicities, invariant subspaces and an additive formula. (English) Zbl 07367605 Proc. Edinb. Math. Soc., II. Ser. 64, No. 2, 279-297 (2021). Reviewer: Trieu Le (Toledo) MSC: 47A13 47A15 47A16 47A80 47B37 47B38 46C99 32A35 32A36 32A70 PDF BibTeX XML Cite \textit{A. Chattopadhyay} et al., Proc. Edinb. Math. Soc., II. Ser. 64, No. 2, 279--297 (2021; Zbl 07367605) Full Text: DOI arXiv
Vetterlein, Thomas Gradual transitivity in orthogonality spaces of finite rank. (English) Zbl 1498.46026 Aequationes Math. 95, No. 3, 483-503 (2021). Reviewer: Sergejs Solovjovs (Praha) MSC: 46C05 06C15 81P10 11E39 11E88 12D99 12E15 PDF BibTeX XML Cite \textit{T. Vetterlein}, Aequationes Math. 95, No. 3, 483--503 (2021; Zbl 1498.46026) Full Text: DOI arXiv
Amyari, Maryam; Khibary, Marzieh Moradian Approximate \(\omega \)-orthogonality and \(\omega \)-derivation. (English) Zbl 07354316 Math. Inequal. Appl. 24, No. 2, 463-476 (2021). MSC: 47A12 46B20 46C05 PDF BibTeX XML Cite \textit{M. Amyari} and \textit{M. M. Khibary}, Math. Inequal. Appl. 24, No. 2, 463--476 (2021; Zbl 07354316) Full Text: DOI
Minculete, Nicuşor; Niezgoda, Marek The orthogonal projections and several inequalities. (English) Zbl 1477.46024 Math. Inequal. Appl. 24, No. 1, 185-200 (2021). MSC: 46C05 26D10 26D15 PDF BibTeX XML Cite \textit{N. Minculete} and \textit{M. Niezgoda}, Math. Inequal. Appl. 24, No. 1, 185--200 (2021; Zbl 1477.46024) Full Text: DOI
Buhagiar, D.; Chetcuti, E.; Weber, H. Order topology on orthocomplemented posets of linear subspaces of a pre-Hilbert space. (English) Zbl 1472.46021 Ann. Mat. Pura Appl. (4) 200, No. 1, 211-228 (2021). MSC: 46C05 03G12 81P10 46L30 PDF BibTeX XML Cite \textit{D. Buhagiar} et al., Ann. Mat. Pura Appl. (4) 200, No. 1, 211--228 (2021; Zbl 1472.46021) Full Text: DOI arXiv
Rovnyak, James Orthogonal sums in Kreĭn spaces. (English) Zbl 07329485 Proc. Am. Math. Soc. 149, No. 5, 1999-2010 (2021). Reviewer: Andreas Fleige (Dortmund) MSC: 47B50 47A05 46C20 PDF BibTeX XML Cite \textit{J. Rovnyak}, Proc. Am. Math. Soc. 149, No. 5, 1999--2010 (2021; Zbl 07329485) Full Text: DOI
Baidiuk, D.; Derkach, V.; Hassi, S. Unitary boundary pairs for isometric operators in Pontryagin spaces and generalized coresolvents. (English) Zbl 1514.47014 Complex Anal. Oper. Theory 15, No. 2, Paper No. 32, 53 p. (2021). Reviewer: Edward L. Pekarev (Odessa) MSC: 47A20 47A56 47B50 46C20 PDF BibTeX XML Cite \textit{D. Baidiuk} et al., Complex Anal. Oper. Theory 15, No. 2, Paper No. 32, 53 p. (2021; Zbl 1514.47014) Full Text: DOI arXiv
Alabiso, Carlo; Weiss, Ittay A primer on Hilbert space theory. Linear spaces, topological spaces, metric spaces, normed spaces, and topological groups. 2nd edition. (English) Zbl 1457.46001 UNITEXT for Physics. Cham: Springer (ISBN 978-3-030-67416-8/hbk; 978-3-030-67419-9/pbk; 978-3-030-67417-5/ebook). xxii, 328 p. (2021). MSC: 46-01 46C05 00A06 54-01 PDF BibTeX XML Cite \textit{C. Alabiso} and \textit{I. Weiss}, A primer on Hilbert space theory. Linear spaces, topological spaces, metric spaces, normed spaces, and topological groups. 2nd edition. Cham: Springer (2021; Zbl 1457.46001) Full Text: DOI
Minculete, Nicuşor; Păltănea, Radu Weak \(n\)-inner product spaces. (English) Zbl 1470.46045 Ann. Funct. Anal. 12, No. 2, Paper No. 22, 23 p. (2021). MSC: 46C50 26D15 26D10 PDF BibTeX XML Cite \textit{N. Minculete} and \textit{R. Păltănea}, Ann. Funct. Anal. 12, No. 2, Paper No. 22, 23 p. (2021; Zbl 1470.46045) Full Text: DOI arXiv
Groenewald, G. J.; Janse van Rensburg, D. B.; Ran, A. C. M.; Theron, F.; van Straaten, M. \(m\) th roots of \(H\)-selfadjoint matrices. (English) Zbl 1460.15015 Linear Algebra Appl. 610, 804-826 (2021). Reviewer: Tin Yau Tam (Reno) MSC: 15A21 15A20 15A16 15A63 15B57 PDF BibTeX XML Cite \textit{G. J. Groenewald} et al., Linear Algebra Appl. 610, 804--826 (2021; Zbl 1460.15015) Full Text: DOI arXiv
Shannon, Chris On Lipschitz implicit function theorems in Banach spaces and applications. (English) Zbl 1480.47080 J. Math. Anal. Appl. 494, No. 2, Article ID 124589, 16 p. (2021). Reviewer: Bangti Jin (London) MSC: 47J07 91B50 PDF BibTeX XML Cite \textit{C. Shannon}, J. Math. Anal. Appl. 494, No. 2, Article ID 124589, 16 p. (2021; Zbl 1480.47080) Full Text: DOI