Mikrin, Evgeniĭ Anatol’evich; Ryabchenko, Vladimir Nikolaevich; Zubov, Nikolaĭ Evgen’evich; Lapin, Alekseĭ Vladimirovich Analysis and synthesis of dynamic MIMO system based on band matrices of special type. (Russian. English summary) Zbl 1448.93155 Differ. Uravn. Protsessy Upr. 2020, No. 2, 1-14 (2020). MSC: 93C35 15B99 93B05 93C05 PDF BibTeX XML Cite \textit{E. A. Mikrin} et al., Differ. Uravn. Protsessy Upr. 2020, No. 2, 1--14 (2020; Zbl 1448.93155) Full Text: Link
Avila, Artur; Fayad, Bassam; Le Calvez, Patrice; Xu, Disheng; Zhang, Zhiyuan On mixing diffeomorphisms of the disc. (English) Zbl 1448.37052 Invent. Math. 220, No. 3, 673-714 (2020). Reviewer: Álvaro Castañeda (Santiago) MSC: 37E30 37E45 37C05 37E10 37B40 37A25 37J40 PDF BibTeX XML Cite \textit{A. Avila} et al., Invent. Math. 220, No. 3, 673--714 (2020; Zbl 1448.37052) Full Text: DOI
Pathak, J. The number of minimal prime ideals in a \(k\)-integral domain and an algorithm for constructing maximal \(k\)-zero divisors in \(Z_n\). (English) Zbl 1451.13019 J. Comb. Math. Comb. Comput. 110, 39-60 (2019). MSC: 13A70 13A05 13E99 13F15 PDF BibTeX XML Cite \textit{J. Pathak}, J. Comb. Math. Comb. Comput. 110, 39--60 (2019; Zbl 1451.13019)
Vivek, S.; Mathew, Sunil C. Certain algebraic structures associated with a double fuzzy topological space. (English) Zbl 1452.54007 Math. Sci., Springer 13, No. 4, 325-334 (2019). MSC: 54A40 08A05 PDF BibTeX XML Cite \textit{S. Vivek} and \textit{S. C. Mathew}, Math. Sci., Springer 13, No. 4, 325--334 (2019; Zbl 1452.54007) Full Text: DOI
Kuznetsov, S. P.; Mochalov, V. V.; Chuev, V. P. On Pauli’s theorem in Clifford algebras. (English. Russian original) Zbl 1439.30075 Russ. Math. 63, No. 11, 13-27 (2019); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2019, No. 11, 16-31 (2019). MSC: 30G35 15A66 PDF BibTeX XML Cite \textit{S. P. Kuznetsov} et al., Russ. Math. 63, No. 11, 13--27 (2019; Zbl 1439.30075); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2019, No. 11, 16--31 (2019) Full Text: DOI
Zhuang, Ying; Zhang, Xiaojin; Zhu, Ziyang The determination of when the fractions of \({Z_n}\) are fields. (Chinese. English summary) Zbl 1449.13009 J. Anhui Norm. Univ., Nat. Sci. 42, No. 3, 227-229 (2019). MSC: 13B30 PDF BibTeX XML Cite \textit{Y. Zhuang} et al., J. Anhui Norm. Univ., Nat. Sci. 42, No. 3, 227--229 (2019; Zbl 1449.13009) Full Text: DOI
Rivas, Cristóbal; Triestino, Michele One-dimensional actions of Higman’s group. (English) Zbl 1437.37037 Discrete Anal. 2019, Article No. 20, 15 p. (2019). Reviewer: Athanase Papadopoulos (Strasbourg) MSC: 37C85 37B02 20F65 22F50 06F15 PDF BibTeX XML Cite \textit{C. Rivas} and \textit{M. Triestino}, Discrete Anal. 2019, Article No. 20, 15 p. (2019; Zbl 1437.37037) Full Text: DOI arXiv
Tajmouati, Abdelaziz; Zinedine, Ahmed Algèbres de Jordan sans \(J\)-diviseurs topologiques généralisés de zéro. (French. English summary) Zbl 1443.46028 Funct. Approximatio, Comment. Math. 61, No. 1, 47-55 (2019). MSC: 46H70 17C60 PDF BibTeX XML Cite \textit{A. Tajmouati} and \textit{A. Zinedine}, Funct. Approximatio, Comment. Math. 61, No. 1, 47--55 (2019; Zbl 1443.46028) Full Text: DOI Euclid
Hashemi, Ebrahim; Abdi, Mona; Alhevaz, Abdollah On diameter of the zero-divisor and the compressed zero-divisor graphs of skew Laurent polynomial rings. (English) Zbl 07096441 J. Algebra Appl. 18, No. 7, Article ID 1950126, 18 p. (2019). MSC: 16S36 05C12 16U80 PDF BibTeX XML Cite \textit{E. Hashemi} et al., J. Algebra Appl. 18, No. 7, Article ID 1950126, 18 p. (2019; Zbl 07096441) Full Text: DOI
Alhevaz, Abdollah; Hashemi, Ebrahim; Shokuhifar, Fatemeh On zero-divisors of near-rings of polynomials. (English) Zbl 1414.16038 Quaest. Math. 42, No. 3, 363-372 (2019). MSC: 16Y30 05C12 PDF BibTeX XML Cite \textit{A. Alhevaz} et al., Quaest. Math. 42, No. 3, 363--372 (2019; Zbl 1414.16038) Full Text: DOI
Virili, Simone Algebraic entropy of amenable group actions. (English) Zbl 1450.16019 Math. Z. 291, No. 3-4, 1389-1417 (2019). MSC: 16S35 43A07 16D10 18E35 PDF BibTeX XML Cite \textit{S. Virili}, Math. Z. 291, No. 3--4, 1389--1417 (2019; Zbl 1450.16019) Full Text: DOI arXiv
Berti, Massimiliano; Delort, Jean-Marc Almost global solutions of capillary-gravity water waves equations on the circle. (English) Zbl 1409.35002 Lecture Notes of the Unione Matematica Italiana 24. Cham: Springer; Bologna: Unione Matematica Italiana (UMI) (ISBN 978-3-319-99485-7/pbk; 978-3-319-99486-4/ebook). x, 269 p. (2018). Reviewer: Piotr Biler (Wrocław) MSC: 35-02 35A01 35Q35 35S50 76B15 PDF BibTeX XML Cite \textit{M. Berti} and \textit{J.-M. Delort}, Almost global solutions of capillary-gravity water waves equations on the circle. Cham: Springer; Bologna: Unione Matematica Italiana (UMI) (2018; Zbl 1409.35002) Full Text: DOI
Alghazzawi, Dilshad Reversible elements in rings. (English) Zbl 1425.16023 J. Algebra Comb. Discrete Struct. Appl. 4, No. 2, 219-225 (2017). MSC: 16U10 16U60 PDF BibTeX XML Cite \textit{D. Alghazzawi}, J. Algebra Comb. Discrete Struct. Appl. 4, No. 2, 219--225 (2017; Zbl 1425.16023) Full Text: DOI
Dzik, Wojciech; Radeleczki, Sándor Direct product of \(\ell\)-algebras and unification: an application to residuated lattices. (English) Zbl 1398.08007 J. Mult.-Val. Log. Soft Comput. 28, No. 2-3, 189-215 (2017). MSC: 08B05 08A05 06B20 03G25 PDF BibTeX XML Cite \textit{W. Dzik} and \textit{S. Radeleczki}, J. Mult.-Val. Log. Soft Comput. 28, No. 2--3, 189--215 (2017; Zbl 1398.08007) Full Text: Link
Nejjari, M. A. Some characterizations of Hermitian Banach algebras. (English) Zbl 1402.46036 Rend. Circ. Mat. Palermo (2) 66, No. 3, 295-301 (2017). Reviewer: Hung Le Pham (Wellington) MSC: 46K05 46H05 PDF BibTeX XML Cite \textit{M. A. Nejjari}, Rend. Circ. Mat. Palermo (2) 66, No. 3, 295--301 (2017; Zbl 1402.46036) Full Text: DOI
Song, Xianhua; Ji, Guoxing Additive maps preserving quasi-invertibilities or quasi-zero divisors. (Chinese. English summary) Zbl 1389.47107 Acta Math. Sin., Chin. Ser. 60, No. 2, 217-230 (2017). MSC: 47B49 47A05 PDF BibTeX XML Cite \textit{X. Song} and \textit{G. Ji}, Acta Math. Sin., Chin. Ser. 60, No. 2, 217--230 (2017; Zbl 1389.47107)
Nejjari, M. A. Symmetric \(m\)-convex algebras without algebraic zero divisor and results of Gelfand-Mazur type. (English) Zbl 1399.46063 Acta Math. Univ. Comen., New Ser. 86, No. 2, 329-333 (2017). Reviewer: Rudi M. Brits (Johannesburg) MSC: 46H05 PDF BibTeX XML Cite \textit{M. A. Nejjari}, Acta Math. Univ. Comen., New Ser. 86, No. 2, 329--333 (2017; Zbl 1399.46063)
Schulz, F.; Brits, R.; Hasse, M. Identities, approximate identities and topological divisors of zero in Banach algebras. (English) Zbl 1377.46030 J. Math. Anal. Appl. 455, No. 2, 1627-1635 (2017). Reviewer: Wiesław Tadeusz Żelazko (Warszawa) MSC: 46H20 46H10 PDF BibTeX XML Cite \textit{F. Schulz} et al., J. Math. Anal. Appl. 455, No. 2, 1627--1635 (2017; Zbl 1377.46030) Full Text: DOI
Anderson, D. D.; Chun, Sangmin Annihilator conditions on modules over commutative rings. (English) Zbl 1453.13028 J. Algebra Appl. 16, No. 8, Article ID 1750143, 19 p. (2017). MSC: 13C12 13C13 13A15 PDF BibTeX XML Cite \textit{D. D. Anderson} and \textit{S. Chun}, J. Algebra Appl. 16, No. 8, Article ID 1750143, 19 p. (2017; Zbl 1453.13028) Full Text: DOI
Milošević, Nela; Petrović, Zoran Z. Ideal zero-divisor complex. (English) Zbl 1370.13008 J. Commut. Algebra 9, No. 2, 243-261 (2017). Reviewer: Nicholas A. Scoville (Collegeville) MSC: 13A99 55P15 PDF BibTeX XML Cite \textit{N. Milošević} and \textit{Z. Z. Petrović}, J. Commut. Algebra 9, No. 2, 243--261 (2017; Zbl 1370.13008) Full Text: DOI Euclid
Babiarz, Artur; Czornik, Adam; Makarov, Evgenii; Niezabitowski, Michał; Popova, Svetlana Pole placement theorem for discrete time-varying linear systems. (English) Zbl 1358.93084 SIAM J. Control Optim. 55, No. 2, 671-692 (2017). MSC: 93B55 37J40 39A06 39A22 PDF BibTeX XML Cite \textit{A. Babiarz} et al., SIAM J. Control Optim. 55, No. 2, 671--692 (2017; Zbl 1358.93084) Full Text: DOI
González, Jesús; Gutiérrez, Bárbara; Yuzvinsky, Sergey Higher topological complexity of subcomplexes of products of spheres and related polyhedral product spaces. (English) Zbl 1420.55008 Topol. Methods Nonlinear Anal. 48, No. 2, 419-451 (2016). MSC: 55M30 20F36 52B70 52C35 55U10 68T40 PDF BibTeX XML Cite \textit{J. González} et al., Topol. Methods Nonlinear Anal. 48, No. 2, 419--451 (2016; Zbl 1420.55008) Full Text: DOI
González, Jesús; Gutiérrez, Bárbara; Gutiérrez, Darwin; Lara, Adriana Motion planning in real flag manifolds. (English) Zbl 1359.55003 Homology Homotopy Appl. 18, No. 2, 359-375 (2016). Reviewer: Jose Calcines (La Laguna) MSC: 55M30 57T15 68T40 70B15 PDF BibTeX XML Cite \textit{J. González} et al., Homology Homotopy Appl. 18, No. 2, 359--375 (2016; Zbl 1359.55003) Full Text: DOI
Nejjari, M. A. On a natural ordering in strictly real Banach algebras. (English) Zbl 1365.46041 Mediterr. J. Math. 13, No. 5, 2753-2758 (2016). MSC: 46H05 46K05 PDF BibTeX XML Cite \textit{M. A. Nejjari}, Mediterr. J. Math. 13, No. 5, 2753--2758 (2016; Zbl 1365.46041) Full Text: DOI
Kustin, Andrew R.; Striuli, Janet; Vraciu, Adela Exact pairs of homogeneous zero divisors. (English) Zbl 1338.13025 J. Algebra 453, 221-248 (2016). Reviewer: Qiao Lei (Chengdu) MSC: 13D02 13A02 PDF BibTeX XML Cite \textit{A. R. Kustin} et al., J. Algebra 453, 221--248 (2016; Zbl 1338.13025) Full Text: DOI arXiv
Rajeswari, V.; Gajivaradhan, P. Matrix groupoids. (English) Zbl 1347.15026 Ultra Sci. Phys. Sci., Sect. A 27, No. 3, 255-262 (2015). MSC: 15A30 20N02 PDF BibTeX XML Cite \textit{V. Rajeswari} and \textit{P. Gajivaradhan}, Ultra Sci. Phys. Sci., Sect. A 27, No. 3, 255--262 (2015; Zbl 1347.15026)
Huang, Jirong; Guo, Shufeng The algebraic properties of group rings \(RG_p\) and their structures. (Chinese. English summary) Zbl 1349.16030 Math. Pract. Theory 45, No. 3, 268-272 (2015). MSC: 16S34 16U60 20C05 PDF BibTeX XML Cite \textit{J. Huang} and \textit{S. Guo}, Math. Pract. Theory 45, No. 3, 268--272 (2015; Zbl 1349.16030)
Bardakov, V. G.; Petukhova, M. S. On potential counterexamples to the problem of zero divisors. (Russian) Zbl 1349.20003 Vestn. Novosib. Gos. Univ., Ser. Mat. Mekh. Inform. 15, No. 3, 30-50 (2015). MSC: 20C07 16S34 PDF BibTeX XML Cite \textit{V. G. Bardakov} and \textit{M. S. Petukhova}, Vestn. Novosib. Gos. Univ., Ser. Mat. Mekh. Inform. 15, No. 3, 30--50 (2015; Zbl 1349.20003) Full Text: MNR
Ebrahimi Atani, S.; Ebrahimi Sarvandi, Z. The total graph of a commutative semiring with respect to proper ideals. (English) Zbl 1339.16049 J. Algebra Relat. Top. 3, No. 2, 27-41 (2015). MSC: 16Y60 05C25 05C75 16D25 PDF BibTeX XML Cite \textit{S. Ebrahimi Atani} and \textit{Z. Ebrahimi Sarvandi}, J. Algebra Relat. Top. 3, No. 2, 27--41 (2015; Zbl 1339.16049) Full Text: Link
Tang, Gaohua; Li, Yu; Zhang, Hengbin; Wu, Yansheng The structure of a class of finite rings with zero divisors. (Chinese. English summary) Zbl 1340.16018 J. Guangxi Norm. Univ., Nat. Sci. 33, No. 1, 67-73 (2015). MSC: 16P10 16U60 16N40 PDF BibTeX XML Cite \textit{G. Tang} et al., J. Guangxi Norm. Univ., Nat. Sci. 33, No. 1, 67--73 (2015; Zbl 1340.16018) Full Text: DOI
Estaji, A. A.; Haghdadi, T.; Estaji, A. As. Zero divisor graphs for \(S\)-act. (English) Zbl 1320.20063 Lobachevskii J. Math. 36, No. 1, 1-8 (2015). MSC: 20M30 05C25 20M50 PDF BibTeX XML Cite \textit{A. A. Estaji} et al., Lobachevskii J. Math. 36, No. 1, 1--8 (2015; Zbl 1320.20063) Full Text: DOI
Jung, Da Woon; Kim, Nam Kyun; Lee, Yang; Ryu, Sung Ju On properties related to reversible rings. (English) Zbl 1323.16029 Bull. Korean Math. Soc. 52, No. 1, 247-261 (2015). Reviewer: Anna Kuzmina (Barnaul) MSC: 16U80 16N40 16S36 16S50 16D25 PDF BibTeX XML Cite \textit{D. W. Jung} et al., Bull. Korean Math. Soc. 52, No. 1, 247--261 (2015; Zbl 1323.16029) Full Text: DOI Link
Deng, Fang’an \(E\)-inversive semigroups of \(N(2,2,0)\) algebra. (Chinese. English summary) Zbl 1313.20048 J. Math., Wuhan Univ. 34, No. 5, 977-984 (2014). MSC: 20M17 08A05 20M10 PDF BibTeX XML Cite \textit{F. Deng}, J. Math., Wuhan Univ. 34, No. 5, 977--984 (2014; Zbl 1313.20048)
Chen, Lu On middle units in \(N(2,2,0)\) algebra. (Chinese. English summary) Zbl 1313.20047 J. Nat. Sci. Heilongjiang Univ. 31, No. 3, 287-290 (2014). MSC: 20M17 08A05 20M10 PDF BibTeX XML Cite \textit{L. Chen}, J. Nat. Sci. Heilongjiang Univ. 31, No. 3, 287--290 (2014; Zbl 1313.20047) Full Text: DOI
Shah, Tariq; Shaheen, Salma Soft topological groups and rings. (English) Zbl 1304.54061 Ann. Fuzzy Math. Inform. 7, No. 5, 725-743 (2014). MSC: 54H11 54H13 PDF BibTeX XML Cite \textit{T. Shah} and \textit{S. Shaheen}, Ann. Fuzzy Math. Inform. 7, No. 5, 725--743 (2014; Zbl 1304.54061) Full Text: Link
Ivanov, S. V.; Mikhailov, Roman On zero-divisors in group rings of groups with torsion. (English) Zbl 1300.20004 Can. Math. Bull. 57, No. 2, 326-334 (2014). Reviewer: Todor Mollov (Plovdiv) MSC: 20C07 16S34 20E06 20F50 20F05 PDF BibTeX XML Cite \textit{S. V. Ivanov} and \textit{R. Mikhailov}, Can. Math. Bull. 57, No. 2, 326--334 (2014; Zbl 1300.20004) Full Text: DOI
Kamal, Ahmed A. M.; Al-Shaalan, Khalid H. Commutativity of near-rings with derivations. (English) Zbl 1300.16049 Algebra Colloq. 21, No. 2, 215-230 (2014). Reviewer: Howard E. Bell (St. Catharines) MSC: 16Y30 16W25 16U80 16N60 16U70 PDF BibTeX XML Cite \textit{A. A. M. Kamal} and \textit{K. H. Al-Shaalan}, Algebra Colloq. 21, No. 2, 215--230 (2014; Zbl 1300.16049) Full Text: DOI
Han, Juncheol; Park, Sangwon Regular action in rings. (English) Zbl 1291.16037 Commun. Algebra 42, No. 2, 872-879 (2014). MSC: 16W22 13H99 16U60 16S50 16D25 PDF BibTeX XML Cite \textit{J. Han} and \textit{S. Park}, Commun. Algebra 42, No. 2, 872--879 (2014; Zbl 1291.16037) Full Text: DOI
Roé, Joaquim Maximal rank for schemes of small multiplicity by Évain’s differential Horace method. (English) Zbl 1291.14019 Trans. Am. Math. Soc. 366, No. 2, 857-874 (2014). Reviewer: Elena Guardo (Catania) MSC: 14C20 14H20 14H50 14D06 PDF BibTeX XML Cite \textit{J. Roé}, Trans. Am. Math. Soc. 366, No. 2, 857--874 (2014; Zbl 1291.14019) Full Text: Link
Fischler, Stéphane; Nakamaye, Michael Multiplicity estimates and degeneration. (English) Zbl 1285.14004 Manuscr. Math. 143, No. 1-2, 239-251 (2014). Reviewer: Michel Waldschmidt (Paris) MSC: 14C17 11J85 14R20 14C20 14J17 PDF BibTeX XML Cite \textit{S. Fischler} and \textit{M. Nakamaye}, Manuscr. Math. 143, No. 1--2, 239--251 (2014; Zbl 1285.14004) Full Text: DOI
Witno, Amin Modular zero divisors of longest exponentiation cycle. (English) Zbl 1335.11004 Notes Number Theory Discrete Math. 19, No. 3, 66-69 (2013). MSC: 11A05 11A07 PDF BibTeX XML Cite \textit{A. Witno}, Notes Number Theory Discrete Math. 19, No. 3, 66--69 (2013; Zbl 1335.11004) Full Text: Link
Brunotte, Horst Discrete convolution rings. (English) Zbl 1313.16049 Rom. J. Math. Comput. Sci. 3, No. 2, 155-159 (2013). MSC: 16S99 13F15 13F25 16U60 16S36 PDF BibTeX XML Cite \textit{H. Brunotte}, Rom. J. Math. Comput. Sci. 3, No. 2, 155--159 (2013; Zbl 1313.16049)
Ebrahimi Atani, S.; Ebrahimi Sarvandi, Z.; Shajari Kohan, M. On \(\delta\)-primary ideals of commutative semirings. (English) Zbl 1313.16095 Rom. J. Math. Comput. Sci. 3, No. 1, 71-81 (2013). MSC: 16Y60 16D25 12K99 PDF BibTeX XML Cite \textit{S. Ebrahimi Atani} et al., Rom. J. Math. Comput. Sci. 3, No. 1, 71--81 (2013; Zbl 1313.16095)
Akbari, S.; Heydari, F. The regular graph of a commutative ring. (English) Zbl 1299.05152 Period. Math. Hung. 67, No. 2, 211-220 (2013). Reviewer: Gábor Horváth (Debrecen) MSC: 05C25 05C15 05C69 13E05 PDF BibTeX XML Cite \textit{S. Akbari} and \textit{F. Heydari}, Period. Math. Hung. 67, No. 2, 211--220 (2013; Zbl 1299.05152) Full Text: DOI
Kleyn, Aleks Polynomials over associative \(D\)-algebra. (English) Zbl 1292.16018 Clifford Anal. Clifford Algebr. Appl. 2, No. 2, 97-123 (2013). MSC: 16S36 12E05 PDF BibTeX XML Cite \textit{A. Kleyn}, Clifford Anal. Clifford Algebr. Appl. 2, No. 2, 97--123 (2013; Zbl 1292.16018) Full Text: arXiv
Tajmouati, Abdelaziz On bornological divisors of zero and permanently singular elements in multiplicative convex bornological Jordan algebras. (English) Zbl 1290.46038 Int. J. Math. Anal., Ruse 7, No. 29-32, 1575-1586 (2013). MSC: 46H05 PDF BibTeX XML Cite \textit{A. Tajmouati}, Int. J. Math. Anal., Ruse 7, No. 29--32, 1575--1586 (2013; Zbl 1290.46038) Full Text: DOI
Abel, Mati; Żelazko, Wiesław A characterization of non-removable ideals in commutative locally multiplicatively pseudoconvex algebras. (English) Zbl 1286.46054 Rend. Circ. Mat. Palermo (2) 62, No. 2, 179-187 (2013). MSC: 46J05 46J20 PDF BibTeX XML Cite \textit{M. Abel} and \textit{W. Żelazko}, Rend. Circ. Mat. Palermo (2) 62, No. 2, 179--187 (2013; Zbl 1286.46054) Full Text: DOI
Vasantha Kandasamy, W. B.; Smarandache, Florentin Subset interval groupoids. (English) Zbl 1273.20070 Columbus, OH: Educational Publisher (ISBN 978-1-59973-226-8/pbk). 245 p. (2013). MSC: 20N02 20N05 20-01 15A30 65G30 22A99 PDF BibTeX XML Cite \textit{W. B. Vasantha Kandasamy} and \textit{F. Smarandache}, Subset interval groupoids. Columbus, OH: Educational Publisher (2013; Zbl 1273.20070) Full Text: Link
Han, Juncheol; Lee, Yang; Park, Sangwon Imprimitive regular action in the ring of integers modulo \(n\). (English) Zbl 1300.16041 Kim, Jin Yong (ed.) et al., Contemporary ring theory 2011. Proceedings of the 6th China-Japan-Korea international conference, Kyung Hee University, Suwon, Korea, June 27–July 2, 2011. Hackensack, NJ: World Scientific (ISBN 978-981-4397-67-4/hbk; 978-981-4397-69-8/ebook). 182-195 (2012). MSC: 16W22 13M05 16U60 PDF BibTeX XML Cite \textit{J. Han} et al., in: Contemporary ring theory 2011. Proceedings of the 6th China-Japan-Korea international conference, Kyung Hee University, Suwon, Korea, June 27--July 2, 2011. Hackensack, NJ: World Scientific. 182--195 (2012; Zbl 1300.16041) Full Text: DOI
Srivastava, B. L.; Singh, Abhay Raj Banach algebra of a class of Dirichlet series. (English) Zbl 1325.46053 Jñānābha 42, 59-68 (2012). Reviewer: Lajos Molnár (Debrecen) MSC: 46J15 PDF BibTeX XML Cite \textit{B. L. Srivastava} and \textit{A. R. Singh}, Jñānābha 42, 59--68 (2012; Zbl 1325.46053)
Tajmouati, Abdelaziz On topological divisor of zero and permanently singular elements in Jordan Banach algebras. (English) Zbl 1284.46039 Int. J. Math. Anal., Ruse 6, No. 57-60, 2871-2884 (2012). MSC: 46H70 PDF BibTeX XML Cite \textit{A. Tajmouati}, Int. J. Math. Anal., Ruse 6, No. 57--60, 2871--2884 (2012; Zbl 1284.46039) Full Text: Link
Deng, Fangan; Yong, Longquan Regular semigroups of an \(N(2,2,0)\) algebra. (Chinese. English summary) Zbl 1274.20064 Adv. Math., Beijing 41, No. 6, 665-671 (2012). MSC: 20M17 08A05 20M10 PDF BibTeX XML Cite \textit{F. Deng} and \textit{L. Yong}, Adv. Math., Beijing 41, No. 6, 665--671 (2012; Zbl 1274.20064)
Kamal, Ahmed A. M.; Al-Shaalan, Khalid H. Commutativity of near-rings with derivations by using algebraic substructures. (English) Zbl 1269.16041 Indian J. Pure Appl. Math. 43, No. 3, 211-225 (2012). Reviewer: Howard E. Bell (St. Catharines) MSC: 16Y30 16W25 16U80 16D25 16U70 PDF BibTeX XML Cite \textit{A. A. M. Kamal} and \textit{K. H. Al-Shaalan}, Indian J. Pure Appl. Math. 43, No. 3, 211--225 (2012; Zbl 1269.16041) Full Text: DOI
Monceur, Samiha; Yengui, Ihsen On the leading terms ideals of polynomial ideals over a valuation ring. (English) Zbl 1242.13013 J. Algebra 351, No. 1, 382-389 (2012). MSC: 13C10 19A13 14Q20 03F65 PDF BibTeX XML Cite \textit{S. Monceur} and \textit{I. Yengui}, J. Algebra 351, No. 1, 382--389 (2012; Zbl 1242.13013) Full Text: DOI
Ivanyos, Gábor; Karpinski, Marek; Rónyai, Lajos; Saxena, Nitin Trading GRH for algebra: algorithms for factoring polynomials and related structures. (English) Zbl 1239.68080 Math. Comput. 81, No. 277, 493-531 (2012). Reviewer: Gábor Horváth (Debrecen) MSC: 12Y05 11T06 16Z05 68W30 PDF BibTeX XML Cite \textit{G. Ivanyos} et al., Math. Comput. 81, No. 277, 493--531 (2012; Zbl 1239.68080) Full Text: DOI
Dinda, Bivas; Samanta, T. K.; Bera, U. K. Intuitionistic fuzzy Banach algebra. (English) Zbl 1314.46087 Bull. Math. Anal. Appl. 3, No. 3, 273-281 (2011). MSC: 46S40 PDF BibTeX XML Cite \textit{B. Dinda} et al., Bull. Math. Anal. Appl. 3, No. 3, 273--281 (2011; Zbl 1314.46087) Full Text: Link arXiv
Skobelev, V. V. Properties of zero divisors in associative rings. (Russian) Zbl 1249.16042 Tr. Inst. Prikl. Mat. Mekh. 23, 192-201 (2011). Reviewer: Evgeny Sevost’yanov (Donetsk) MSC: 16U99 16D25 PDF BibTeX XML Cite \textit{V. V. Skobelev}, Tr. Inst. Prikl. Mat. Mekh. 23, 192--201 (2011; Zbl 1249.16042)
Cocos, Mihail On the commutativity of an element and its derivative in a finite dimensional algebra. (English) Zbl 1253.16040 Int. J. Algebra 5, No. 29-32, 1597-1602 (2011). MSC: 16W25 47B47 PDF BibTeX XML Cite \textit{M. Cocos}, Int. J. Algebra 5, No. 29--32, 1597--1602 (2011; Zbl 1253.16040) Full Text: Link
Veldsman, Stefan Arithmetic convolution rings. (English) Zbl 1252.16027 Int. J. Algebra 5, No. 13-16, 771-791 (2011). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16S99 13F15 13F25 16U60 16S36 16P40 PDF BibTeX XML Cite \textit{S. Veldsman}, Int. J. Algebra 5, No. 13--16, 771--791 (2011; Zbl 1252.16027) Full Text: Link
Díaz, S.; Induráin, E.; De Baets, B.; Montes, S. Fuzzy semi-orders: the case of t-norms without zero divisors. (English) Zbl 1241.03062 Fuzzy Sets Syst. 184, No. 1, 52-67 (2011). MSC: 03E72 06A75 91B08 PDF BibTeX XML Cite \textit{S. Díaz} et al., Fuzzy Sets Syst. 184, No. 1, 52--67 (2011; Zbl 1241.03062) Full Text: DOI
Levidiotis, Florida; Spiroff, Sandra Five-point zero-divisor graphs determined by equivalence classes. (English) Zbl 1253.13009 Involve 4, No. 1, 53-64 (2011). Reviewer: David F. Anderson (Knoxville) MSC: 13A99 05C99 PDF BibTeX XML Cite \textit{F. Levidiotis} and \textit{S. Spiroff}, Involve 4, No. 1, 53--64 (2011; Zbl 1253.13009) Full Text: DOI Link
Maimani, Hamid Reza; Yassemi, Siamak On the zero-divisor graphs of commutative semigroups. (English) Zbl 1230.20060 Houston J. Math. 37, No. 3, 733-740 (2011). MSC: 20M14 05C25 05C15 PDF BibTeX XML Cite \textit{H. R. Maimani} and \textit{S. Yassemi}, Houston J. Math. 37, No. 3, 733--740 (2011; Zbl 1230.20060) Full Text: Link
Boynton, Jason G. Prüfer conditions and the total quotient ring. (English) Zbl 1241.13017 Commun. Algebra 39, No. 5, 1624-1630 (2011). Reviewer: David F. Anderson (Knoxville) MSC: 13F05 13F30 13A15 13A18 13B30 PDF BibTeX XML Cite \textit{J. G. Boynton}, Commun. Algebra 39, No. 5, 1624--1630 (2011; Zbl 1241.13017) Full Text: DOI
Nasehpour, Peyman Zero-divisors of semigroup modules. (English) Zbl 1218.13005 Kyungpook Math. J. 51, No. 1, 37-42 (2011). Reviewer: Siamak Yassemi (Tehran) MSC: 13C13 20M25 13A15 13B25 13C05 PDF BibTeX XML Cite \textit{P. Nasehpour}, Kyungpook Math. J. 51, No. 1, 37--42 (2011; Zbl 1218.13005) Full Text: DOI arXiv
Frei, Christopher; Frisch, Sophie Non-unique factorization of polynomials over residue class rings of the integers. (English) Zbl 1223.13014 Commun. Algebra 39, No. 4, 1482-1490 (2011). Reviewer: Jebrel M. Habeb (Irbid) MSC: 13M10 13P05 11T06 20M14 PDF BibTeX XML Cite \textit{C. Frei} and \textit{S. Frisch}, Commun. Algebra 39, No. 4, 1482--1490 (2011; Zbl 1223.13014) Full Text: DOI arXiv
Skhiri, Haïkel Topological divisor of zero perturbation functions. (English) Zbl 1211.46046 J. Pure Appl. Math., Adv. Appl. 4, No. 1, 97-114 (2010). MSC: 46H05 46H20 47A30 47A53 PDF BibTeX XML Cite \textit{H. Skhiri}, J. Pure Appl. Math., Adv. Appl. 4, No. 1, 97--114 (2010; Zbl 1211.46046) Full Text: Link
Bell, Howard E.; Klein, Abraham A. On some commutativity-or-periodicity conditions for rings. (English) Zbl 1216.16028 Far East J. Math. Sci. (FJMS) 44, No. 2, 133-142 (2010). Reviewer: Alireza Abdollahi (Isfahan) MSC: 16U80 16U70 PDF BibTeX XML Cite \textit{H. E. Bell} and \textit{A. A. Klein}, Far East J. Math. Sci. (FJMS) 44, No. 2, 133--142 (2010; Zbl 1216.16028) Full Text: Link
DeMeyer, Lisa; Greve, Larisa; Sabbaghi, Arman; Wang, Jonathan The zero-divisor graph associated to a semigroup. (English) Zbl 1228.20047 Commun. Algebra 38, No. 9, 3370-3391 (2010). Reviewer: Wu Tongsuo (Shanghai) MSC: 20M14 05C25 05C90 PDF BibTeX XML Cite \textit{L. DeMeyer} et al., Commun. Algebra 38, No. 9, 3370--3391 (2010; Zbl 1228.20047) Full Text: DOI
Ballet, S.; Ritzenthaler, C.; Rolland, R. On the existence of dimension zero divisors in algebraic function fields defined over \(\mathbb F_q\). (English) Zbl 1211.11129 Acta Arith. 143, No. 4, 377-392 (2010). Reviewer: Gabriel D. Villa-Salvador (México D.F.) MSC: 11R58 11G10 11G15 11G20 PDF BibTeX XML Cite \textit{S. Ballet} et al., Acta Arith. 143, No. 4, 377--392 (2010; Zbl 1211.11129) Full Text: DOI arXiv
Bell, Howard E.; Klein, Abraham A. Some small-centralizer properties for rings. (English) Zbl 1198.16034 Beitr. Algebra Geom. 51, No. 1, 57-61 (2010). Reviewer: Alireza Abdollahi (Isfahan) MSC: 16U80 16U70 16D70 16P10 PDF BibTeX XML Cite \textit{H. E. Bell} and \textit{A. A. Klein}, Beitr. Algebra Geom. 51, No. 1, 57--61 (2010; Zbl 1198.16034) Full Text: EMIS EuDML
Das, Prohelika Freeing sets and its graph theoretic relevance in a ring \(R\). (English) Zbl 1223.16015 J. Pure Math. 26, 79-86 (2009). MSC: 16U99 05C25 16D25 16P60 05C15 PDF BibTeX XML Cite \textit{P. Das}, J. Pure Math. 26, 79--86 (2009; Zbl 1223.16015)
Kapur, Deepak; Cai, Yongyang An algorithm for computing a Gröbner basis of a polynomial ideal over a ring with zero divisors. (English) Zbl 1205.13032 Math. Comput. Sci. 2, No. 4, 601-634 (2009). MSC: 13P10 14Q20 PDF BibTeX XML Cite \textit{D. Kapur} and \textit{Y. Cai}, Math. Comput. Sci. 2, No. 4, 601--634 (2009; Zbl 1205.13032) Full Text: DOI
Srinivas, T.; Chandra Sekhar Rao, A. K. S. SS-elements and their applications. (English) Zbl 1203.16026 Southeast Asian Bull. Math. 33, No. 2, 361-366 (2009). MSC: 16U99 16S34 16D60 20C07 16U80 PDF BibTeX XML Cite \textit{T. Srinivas} and \textit{A. K. S. Chandra Sekhar Rao}, Southeast Asian Bull. Math. 33, No. 2, 361--366 (2009; Zbl 1203.16026)
Scafati Tallini, Maria; Iurlo, Maurizio Corpids and their properties. (Italian. English summary) Zbl 1195.16014 Matematiche 64, No. 1, 127-145 (2009). MSC: 16E50 20M25 16D25 20M18 PDF BibTeX XML Cite \textit{M. Scafati Tallini} and \textit{M. Iurlo}, Matematiche 64, No. 1, 127--145 (2009; Zbl 1195.16014) Full Text: Link
Behboodi, M.; Beyranvand, R.; Khabazian, H. Strong zero-divisors of non-commutative rings. (English) Zbl 1183.16032 J. Algebra Appl. 8, No. 4, 565-580 (2009). Reviewer: Stefan Veldsman (Al-Khodh) MSC: 16U99 16D25 16P60 16N60 16P10 16S50 PDF BibTeX XML Cite \textit{M. Behboodi} et al., J. Algebra Appl. 8, No. 4, 565--580 (2009; Zbl 1183.16032) Full Text: DOI
Ebrahimi Atani, Shahabaddin An ideal based zero-divisor graph of a commutative semiring. (English) Zbl 1181.16041 Glas. Mat., III. Ser. 44, No. 1, 141-153 (2009). Reviewer: Mirela Ştefănescu (Constanţa) MSC: 16Y60 05C75 16D25 13A15 PDF BibTeX XML Cite \textit{S. Ebrahimi Atani}, Glas. Mat., III. Ser. 44, No. 1, 141--153 (2009; Zbl 1181.16041) Full Text: DOI
Ciungu, Lavinia Corina The radical of a perfect residuated structure. (English) Zbl 1213.03078 Inf. Sci. 179, No. 15, 2695-2709 (2009). MSC: 03G25 03B52 03G12 06F05 28E15 PDF BibTeX XML Cite \textit{L. C. Ciungu}, Inf. Sci. 179, No. 15, 2695--2709 (2009; Zbl 1213.03078) Full Text: DOI
Arizmendi-Peimbert, H.; Carrillo-Hoyo, A.; García, A. A spectral synthesis property for \(C_b(X,\beta)\). (English) Zbl 1182.46042 Commentat. Math. 48, No. 2, 121-127 (2008). Reviewer: Thomas V. Tonev (Missoula/Montana) MSC: 46J20 46J05 PDF BibTeX XML Cite \textit{H. Arizmendi-Peimbert} et al., Commentat. Math. 48, No. 2, 121--127 (2008; Zbl 1182.46042)
Zhang, Kun-Lun; Li, Dong-Hai; Song, Li-Xia Solution of an open problem on pseudo-Archimedean t-norms. (English) Zbl 1162.03031 Inf. Sci. 178, No. 23, 4542-4549 (2008). Reviewer: Peter Sarkoci (Linz) MSC: 03E72 PDF BibTeX XML Cite \textit{K.-L. Zhang} et al., Inf. Sci. 178, No. 23, 4542--4549 (2008; Zbl 1162.03031) Full Text: DOI
Azizi, Abdulrasool On prime and weakly prime submodules. (English) Zbl 1161.13005 Vietnam J. Math. 36, No. 3, 315-325 (2008). Reviewer: Jebrel M. Habeb (Irbid) MSC: 13C99 13C13 13E05 13F05 13F15 PDF BibTeX XML Cite \textit{A. Azizi}, Vietnam J. Math. 36, No. 3, 315--325 (2008; Zbl 1161.13005)
Ebrahimi Atani, Shahabaddin The zero-divisor graph with respect to ideals of a commutative semiring. (English) Zbl 1162.16031 Glas. Mat., III. Ser. 43, No. 2, 309-320 (2008). Reviewer: Mirela Ştefănescu (Constanţa) MSC: 16Y60 05C75 16D25 13A15 PDF BibTeX XML Cite \textit{S. Ebrahimi Atani}, Glas. Mat., III. Ser. 43, No. 2, 309--320 (2008; Zbl 1162.16031) Full Text: DOI
Anderson, David F.; Badawi, Ayman The total graph of a commutative ring. (English) Zbl 1158.13001 J. Algebra 320, No. 7, 2706-2719 (2008). Reviewer: Driss Karim (Nador) MSC: 13A99 13H10 13B10 13C99 PDF BibTeX XML Cite \textit{D. F. Anderson} and \textit{A. Badawi}, J. Algebra 320, No. 7, 2706--2719 (2008; Zbl 1158.13001) Full Text: DOI
Mikhalev, A. V.; Nechaev, A. A.; Prudnikov, A. V.; Staroverov, M. S.; Vydrin, A. S. Semirings of cyclic types. (English. Russian original) Zbl 1167.16037 J. Math. Sci., New York 149, No. 2, 1157-1169 (2008); translation from Fundam. Prikl. Mat. 12, No. 2, 175-192 (2006). Reviewer: Mirela Ştefănescu (Constanţa) MSC: 16Y60 PDF BibTeX XML Cite \textit{A. V. Mikhalev} et al., J. Math. Sci., New York 149, No. 2, 1157--1169 (2008; Zbl 1167.16037); translation from Fundam. Prikl. Mat. 12, No. 2, 175--192 (2006) Full Text: DOI
Kim, Seong Kun On the asphericity of length-6 relative presentations with torsion-free coefficients. (English) Zbl 1191.20026 Proc. Edinb. Math. Soc., II. Ser. 51, No. 1, 201-214 (2008). MSC: 20F05 57M05 PDF BibTeX XML Cite \textit{S. K. Kim}, Proc. Edinb. Math. Soc., II. Ser. 51, No. 1, 201--214 (2008; Zbl 1191.20026) Full Text: DOI
Klein, Abraham A.; Bell, Howard E. Conditions for rings to be finite or have only central zero divisors. (English) Zbl 1149.16029 Stud. Sci. Math. Hung. 44, No. 2, 291-296 (2007). Reviewer: Vesselin Drensky (Sofia) MSC: 16U80 16U70 16P10 PDF BibTeX XML Cite \textit{A. A. Klein} and \textit{H. E. Bell}, Stud. Sci. Math. Hung. 44, No. 2, 291--296 (2007; Zbl 1149.16029) Full Text: DOI
Ohm, Jack A matrix approach to zero-divisors in \(R[x]\). (English) Zbl 1153.13007 Am. Math. Mon. 114, No. 5, 444-464 (2007). Reviewer: Władysław Narkiewicz (Wrocław) MSC: 13B25 15A30 PDF BibTeX XML Cite \textit{J. Ohm}, Am. Math. Mon. 114, No. 5, 444--464 (2007; Zbl 1153.13007) Full Text: DOI
Klein, Abraham A.; Bell, Howard E. Rings with commuting nilpotents and zero divisors. (English) Zbl 1160.16014 Result. Math. 51, No. 1-2, 73-85 (2007). Reviewer: Charles Lanski (Los Angeles) MSC: 16N40 16U80 16D25 16U70 PDF BibTeX XML Cite \textit{A. A. Klein} and \textit{H. E. Bell}, Result. Math. 51, No. 1--2, 73--85 (2007; Zbl 1160.16014) Full Text: DOI
Akhtar, Reza; Lee, Lucas Homology of zero-divisors. (English) Zbl 1140.13004 Rocky Mt. J. Math. 37, No. 4, 1105-1126 (2007). Reviewer: Driss Karim (Nador) MSC: 13A15 13D03 14C15 14C25 PDF BibTeX XML Cite \textit{R. Akhtar} and \textit{L. Lee}, Rocky Mt. J. Math. 37, No. 4, 1105--1126 (2007; Zbl 1140.13004) Full Text: DOI Euclid
Arizmendi, Hugo; Carrillo, Angel; Palacios, Lourdes An example concerning the boundary of topologically invertible elements. (English) Zbl 1149.46039 Jarosz, Krzysztof (ed.), Function spaces. Proceedings of the 5th conference, Edwardsville, IL, USA, May 16–20, 2006. Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-4061-0/pbk). Contemporary Mathematics 435, 43-46 (2007). MSC: 46H05 46H20 PDF BibTeX XML Cite \textit{H. Arizmendi} et al., Contemp. Math. 435, 43--46 (2007; Zbl 1149.46039)
Srivastava, Rajiv K.; Srivastava, Naveen Kumar On a class of entire bicomplex sequences. (English) Zbl 1165.46027 South East Asian J. Math. Math. Sci. 5, No. 3, 47-67 (2007). Reviewer: Mohamed Zohry (Tétouan) MSC: 46K99 PDF BibTeX XML Cite \textit{R. K. Srivastava} and \textit{N. K. Srivastava}, South East Asian J. Math. Math. Sci. 5, No. 3, 47--67 (2007; Zbl 1165.46027)
Hashemi, Ebrahim Some examples of quasi-Armendariz rings. (English) Zbl 1143.16023 Bull. Korean Math. Soc. 44, No. 3, 407-414 (2007). MSC: 16S36 20M25 16S50 16U80 PDF BibTeX XML Cite \textit{E. Hashemi}, Bull. Korean Math. Soc. 44, No. 3, 407--414 (2007; Zbl 1143.16023) Full Text: DOI
Pílniková, Jana Trivializing a central simple algebra of degree 4 over the rational numbers. (English) Zbl 1131.16011 J. Symb. Comput. 42, No. 6, 579-586 (2007). Reviewer: Detlev Hoffmann (Nottingham) MSC: 16K20 16Z05 11Y16 11Y40 68W30 PDF BibTeX XML Cite \textit{J. Pílniková}, J. Symb. Comput. 42, No. 6, 579--586 (2007; Zbl 1131.16011) Full Text: DOI
Cieśliński, Jan L. Divisors of zero in the Lipschitz semigroup. (English) Zbl 1120.15026 Adv. Appl. Clifford Algebr. 17, No. 2, 153-157 (2007). Reviewer: Georgi Hristov Georgiev (Shumen) MSC: 15A66 11E88 15A63 PDF BibTeX XML Cite \textit{J. L. Cieśliński}, Adv. Appl. Clifford Algebr. 17, No. 2, 153--157 (2007; Zbl 1120.15026) Full Text: DOI
Fernández, M.; Muñoz, V.; Ugarte, L. Weakly Lefschetz symplectic manifolds. (English) Zbl 1111.53065 Trans. Am. Math. Soc. 359, No. 4, 1851-1873 (2007). MSC: 53D05 57R17 53D35 53C15 PDF BibTeX XML Cite \textit{M. Fernández} et al., Trans. Am. Math. Soc. 359, No. 4, 1851--1873 (2007; Zbl 1111.53065) Full Text: DOI
Yan, Chang-Dau; Chieng, Wei-Hua Method for finding multiple roots of polynomials. (English) Zbl 1100.65045 Comput. Math. Appl. 51, No. 3-4, 605-620 (2006). MSC: 65H05 12Y05 26D10 30C15 11A05 PDF BibTeX XML Cite \textit{C.-D. Yan} and \textit{W.-H. Chieng}, Comput. Math. Appl. 51, No. 3--4, 605--620 (2006; Zbl 1100.65045) Full Text: DOI
Nielsen, Pace P. Semi-commutativity and the McCoy condition. (English) Zbl 1110.16036 J. Algebra 298, No. 1, 134-141 (2006). Reviewer: Stefan Veldsman (Al-Khodh) MSC: 16U80 16S36 PDF BibTeX XML Cite \textit{P. P. Nielsen}, J. Algebra 298, No. 1, 134--141 (2006; Zbl 1110.16036) Full Text: DOI
Escassut, Alain Topological divisors of zero and Shilov boundary. (English) Zbl 1105.46053 Topology Appl. 153, No. 7, 1152-1163 (2006). Reviewer: Cristina Pérez-García (Santander) MSC: 46S10 12J25 PDF BibTeX XML Cite \textit{A. Escassut}, Topology Appl. 153, No. 7, 1152--1163 (2006; Zbl 1105.46053) Full Text: DOI
Belov, A. Ya. Linear recurrence equations on a tree. (English. Russian original) Zbl 1111.16024 Math. Notes 78, No. 5, 603-609 (2005); translation from Mat. Zametki 78, No. 5, 643-651 (2005). Reviewer: L. A. Bokut’ (Novosibirsk) MSC: 16S15 16Z05 11B37 05C05 13P10 PDF BibTeX XML Cite \textit{A. Ya. Belov}, Math. Notes 78, No. 5, 603--609 (2005; Zbl 1111.16024); translation from Mat. Zametki 78, No. 5, 643--651 (2005) Full Text: DOI
Vasantha, W. B.; Chetry, Moon K. On the number of Smarandache zero-divisors and Smarandache weak zero-divisors in loop rings. (English) Zbl 1084.20517 Sci. Magna 1, No. 2, 96-108 (2005). MSC: 20N05 17D05 20C05 PDF BibTeX XML Cite \textit{W. B. Vasantha} and \textit{M. K. Chetry}, Sci. Magna 1, No. 2, 96--108 (2005; Zbl 1084.20517)
Wendt, Gerhard On the number of zero divisors in near-rings. (English) Zbl 1077.16046 Chajda, I. (ed.) et al., Proceedings of the 68th workshop on general algebra “68. Arbeitstagung Allgemeine Algebra”, Dresden, Germany, June 10–13, 2004 and of the summer school 2004 on general algebra and ordered sets, Malá Morávka, Czech Republic, September 5–11, 2004. Klagenfurt: Verlag Johannes Heyn (ISBN 3-7084-0163-8/pbk). Contributions to General Algebra 16, 289-291 (2005). MSC: 16Y30 PDF BibTeX XML Cite \textit{G. Wendt}, Contrib. Gen. Algebra 16, 289--291 (2005; Zbl 1077.16046)