Lee, Pjek-Hwee; Puczyłowski, Edmund R. On reduced rings with prime factors simple. (English) Zbl 1512.16012 J. Algebra Appl. 22, No. 1, Article ID 2350028, 12 p. (2023). Reviewer: Stefan Veldsman (Port Elizabeth) MSC: 16E50 16N80 PDFBibTeX XMLCite \textit{P.-H. Lee} and \textit{E. R. Puczyłowski}, J. Algebra Appl. 22, No. 1, Article ID 2350028, 12 p. (2023; Zbl 1512.16012) Full Text: DOI
Nowakowska, M.; Puczyłowski, E. R. On left ideal essential extensions of rings. (English) Zbl 1474.16073 Acta Math. Hung. 162, No. 2, 539-548 (2020). MSC: 16S70 16S50 60G55 60J65 PDFBibTeX XMLCite \textit{M. Nowakowska} and \textit{E. R. Puczyłowski}, Acta Math. Hung. 162, No. 2, 539--548 (2020; Zbl 1474.16073) Full Text: DOI
Matczuk, Jerzy; Nowakowska, Marta; Puczyłowski, Edmund R. Intersection graphs of modules and rings. (English) Zbl 1441.16007 J. Algebra Appl. 17, No. 7, Article ID 1850131, 20 p. (2018). MSC: 16D70 16P99 05C63 PDFBibTeX XMLCite \textit{J. Matczuk} et al., J. Algebra Appl. 17, No. 7, Article ID 1850131, 20 p. (2018; Zbl 1441.16007) Full Text: DOI arXiv
Chebotar, M.; Ke, W.-F.; Lee, P.-H.; Puczyłowski, Edmund R. On polynomial rings over nil rings in several variables and the central closure of prime nil rings. (English) Zbl 1431.16017 Isr. J. Math. 223, 309-322 (2018). MSC: 16N40 16S36 16N60 PDFBibTeX XMLCite \textit{M. Chebotar} et al., Isr. J. Math. 223, 309--322 (2018; Zbl 1431.16017) Full Text: DOI arXiv
Chebotar, M.; Ke, W.-F.; Lee, P.-H.; Puczyłowski, E. R. On prime rings whose central closure is finitely generated. (English) Zbl 1406.16022 J. Algebra 488, 282-289 (2017). MSC: 16R50 16N60 PDFBibTeX XMLCite \textit{M. Chebotar} et al., J. Algebra 488, 282--289 (2017; Zbl 1406.16022) Full Text: DOI
Chebotar, M. A.; Lee, P.-H.; Puczyłowski, E. R. On some questions related to Koethe’s nil ideal problem. (English) Zbl 1338.16023 Proc. Edinb. Math. Soc., II. Ser. 59, No. 1, 57-64 (2016). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16N40 16N80 PDFBibTeX XMLCite \textit{M. A. Chebotar} et al., Proc. Edinb. Math. Soc., II. Ser. 59, No. 1, 57--64 (2016; Zbl 1338.16023) Full Text: DOI
Nowakowska, M.; Puczyłowski, E. R. Veldsman’s classes of associative rings. (English) Zbl 1374.16003 Acta Math. Hung. 146, No. 2, 466-495 (2015). Reviewer: Leonid A. Bokut’ (Novosibirsk) MSC: 16D25 16N40 16N60 PDFBibTeX XMLCite \textit{M. Nowakowska} and \textit{E. R. Puczyłowski}, Acta Math. Hung. 146, No. 2, 466--495 (2015; Zbl 1374.16003) Full Text: DOI
Puczyłowski, E. R. On quasi-duo rings. (English) Zbl 1326.16002 Dougherty, Steven (ed.) et al., Noncommutative rings and their applications. International conference on noncommutative rings and their applications, Université d’Artois, Lens, France, July 1–4, 2013. Proceedings. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-1032-2/pbk; 978-1-4704-2264-6/ebook). Contemporary Mathematics 634, 243-252 (2015). MSC: 16D25 16U80 16S36 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Contemp. Math. 634, 243--252 (2015; Zbl 1326.16002)
Lomp, Christian; Puczyłowski, Edmund A note on dimension modules. (English) Zbl 1317.16017 Commun. Algebra 43, No. 6, 2267-2271 (2015). MSC: 16P60 16P20 16D70 16D25 PDFBibTeX XMLCite \textit{C. Lomp} and \textit{E. Puczyłowski}, Commun. Algebra 43, No. 6, 2267--2271 (2015; Zbl 1317.16017) Full Text: DOI
Dougherty, Steven (ed.); Facchini, Alberto (ed.); Leroy, André (ed.); Puczyłowski, Edmund (ed.); Solé, Patrick (ed.) Noncommutative rings and their applications. International conference on noncommutative rings and their applications, Université d’Artois, Lens, France, July 1–4, 2013. Proceedings. (English) Zbl 1310.16001 Contemporary Mathematics 634. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-1032-2/pbk; 978-1-4704-2264-6/ebook). x, 265 p. (2015). MSC: 16-06 16D70 16S36 16S34 16D50 17B35 94B05 94B15 94B60 00B25 PDFBibTeX XMLCite \textit{S. Dougherty} (ed.) et al., Noncommutative rings and their applications. International conference on noncommutative rings and their applications, Université d'Artois, Lens, France, July 1--4, 2013. Proceedings. Providence, RI: American Mathematical Society (AMS) (2015; Zbl 1310.16001) Full Text: DOI
Lee, P.-H.; Puczyłowski, E. R. On prime ideals and radicals of polynomial rings and graded rings. (English) Zbl 1287.16038 J. Pure Appl. Algebra 218, No. 2, 323-332 (2014). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16W50 16S36 16N80 16N60 16N40 16D25 PDFBibTeX XMLCite \textit{P. H. Lee} and \textit{E. R. Puczyłowski}, J. Pure Appl. Algebra 218, No. 2, 323--332 (2014; Zbl 1287.16038) Full Text: DOI
Chebotar, M. A.; Ke, W.-F.; Lee, P.-H.; Puczyłowski, E. R. A linear algebra approach to Koethe’s problem and related questions. (English) Zbl 1275.16021 Linear Multilinear Algebra 61, No. 5, 635-645 (2013). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16N40 16S50 16N80 15A69 15A30 PDFBibTeX XMLCite \textit{M. A. Chebotar} et al., Linear Multilinear Algebra 61, No. 5, 635--645 (2013; Zbl 1275.16021) Full Text: DOI
Yousefian Darani, A.; Puczyłowski, E. R. On 2-absorbing commutative semigroups and their applications to rings. (English) Zbl 1270.20064 Semigroup Forum 86, No. 1, 83-91 (2013). Reviewer: Alessio Sammartano (West Lafayette) MSC: 20M14 13A15 20M12 PDFBibTeX XMLCite \textit{A. Yousefian Darani} and \textit{E. R. Puczyłowski}, Semigroup Forum 86, No. 1, 83--91 (2013; Zbl 1270.20064) Full Text: DOI
Atani, S. E.; Darani, A. Y.; Puczyłowski, E. R. On the diameter and girth of ideal-based zero-divisor graphs. (English) Zbl 1249.05182 Publ. Math. Debr. 78, No. 3-4, 607-612 (2011). Reviewer: Gabriel Semanisin (Kosice) MSC: 05C25 05C12 05C38 05C75 13A15 PDFBibTeX XMLCite \textit{S. E. Atani} et al., Publ. Math. Debr. 78, No. 3--4, 607--612 (2011; Zbl 1249.05182) Full Text: DOI
Chebotar, M. A.; Lee, P.-H.; Puczyłowski, E. R. On Andrunakievich’s chain and Koethe’s problem. (English) Zbl 1216.16009 Isr. J. Math. 180, 119-128 (2010). Reviewer: Stefan Veldsman (Al-Khodh) MSC: 16N40 PDFBibTeX XMLCite \textit{M. A. Chebotar} et al., Isr. J. Math. 180, 119--128 (2010; Zbl 1216.16009) Full Text: DOI Link
Chebotar, M. A.; Lee, P.-H.; Puczyłowski, E. R. A note on termination of the Baer construction of the prime radical. (English) Zbl 1206.16012 Arch. Math. 95, No. 4, 325-332 (2010). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16N80 16N40 16P70 PDFBibTeX XMLCite \textit{M. A. Chebotar} et al., Arch. Math. 95, No. 4, 325--332 (2010; Zbl 1206.16012) Full Text: DOI
Leroy, André; Matczuk, Jerzy; Puczyłowski, Edmund R. A description of quasi-duo \(\mathbb{Z}\)-graded rings. (English) Zbl 1201.16033 Commun. Algebra 38, No. 4, 1319-1324 (2010). Reviewer: Andrei Marcus (Cluj-Napoca) MSC: 16W50 16S36 16U80 16D25 16N20 PDFBibTeX XMLCite \textit{A. Leroy} et al., Commun. Algebra 38, No. 4, 1319--1324 (2010; Zbl 1201.16033) Full Text: DOI arXiv
Chebotar, M.; Lee, P.-H.; Puczylowski, E. R. On commutators and nilpotent elements in simple rings. (English) Zbl 1202.16001 Bull. Lond. Math. Soc. 42, No. 2, 191-194 (2010). Reviewer: Howard E. Bell (St. Catharines) MSC: 16D30 16N60 16N40 16W10 16U99 PDFBibTeX XMLCite \textit{M. Chebotar} et al., Bull. Lond. Math. Soc. 42, No. 2, 191--194 (2010; Zbl 1202.16001) Full Text: DOI Link
Filipowicz, M.; Puczyłowski, E. R. The structure of left filial algebras over a field. (English) Zbl 1183.16001 Taiwanese J. Math. 13, No. 3, 1017-1029 (2009). Reviewer: Stefan Veldsman (Al-Khodh) MSC: 16D25 16N60 16P10 PDFBibTeX XMLCite \textit{M. Filipowicz} and \textit{E. R. Puczyłowski}, Taiwanese J. Math. 13, No. 3, 1017--1029 (2009; Zbl 1183.16001) Full Text: DOI
Chebotar, M.; Lee, P.-H.; Puczyłowski, E. R. On prime rings with commuting nilpotent elements. (English) Zbl 1181.16017 Proc. Am. Math. Soc. 137, No. 9, 2899-2903 (2009). Reviewer: Howard E. Bell (St. Catharines) MSC: 16N60 16N40 16U99 PDFBibTeX XMLCite \textit{M. Chebotar} et al., Proc. Am. Math. Soc. 137, No. 9, 2899--2903 (2009; Zbl 1181.16017) Full Text: DOI
Puczyłowski, Edmund A unified approach to some results on one-sided ideals and matrix rings of associative rings. (English) Zbl 1191.16001 Dung, Nguyen Viet (ed.) et al., Rings, modules and representations. International conference on rings and things in honor of Carl Faith and Barbara Osofsky, Zanesville, OH, USA, June 15–17, 2007. Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-4370-3/pbk). Contemporary Mathematics 480, 311-317 (2009). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16D25 16S50 16N80 16D60 16N40 PDFBibTeX XMLCite \textit{E. Puczyłowski}, Contemp. Math. 480, 311--317 (2009; Zbl 1191.16001)
Chebotar, M. A.; Ke, W.-F.; Lee, P.-H.; Puczyłowski, E. R. A note on polynomial rings over nil rings. (English) Zbl 1197.16022 Brzeziński, Tomasz (ed.) et al., Modules and comodules. Proceedings of the international conference, Porto, Portugal, September 6–8, 2006. Dedicated to Robert Wisbauer on the occasion of his 65th birthday. Basel: Birkhäuser (ISBN 978-3-7643-8741-9/hbk). Trends in Mathematics, 169-172 (2008). MSC: 16N40 16N80 16S36 PDFBibTeX XMLCite \textit{M. A. Chebotar} et al., in: Modules and comodules. Proceedings of the international conference, Porto, Portugal, September 6--8, 2006. Dedicated to Robert Wisbauer on the occasion of his 65th birthday. Basel: Birkhäuser. 169--172 (2008; Zbl 1197.16022)
Lee, P.-H.; Puczyłowski, E. R. On the Behrens radical of matrix rings and polynomial rings. (English) Zbl 1144.16017 J. Pure Appl. Algebra 212, No. 10, 2163-2169 (2008). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16N80 16S36 16S50 PDFBibTeX XMLCite \textit{P. H. Lee} and \textit{E. R. Puczyłowski}, J. Pure Appl. Algebra 212, No. 10, 2163--2169 (2008; Zbl 1144.16017) Full Text: DOI
Wang, Wenkang; Puczyłowski, E. R.; Li, Lian On Armendariz rings and matrix rings with simple 0-multiplication. (English) Zbl 1149.16025 Commun. Algebra 36, No. 4, 1514-1519 (2008). Reviewer: George Szeto (Peoria) MSC: 16S36 16S50 16P60 PDFBibTeX XMLCite \textit{W. Wang} et al., Commun. Algebra 36, No. 4, 1514--1519 (2008; Zbl 1149.16025) Full Text: DOI
Leroy, André; Matczuk, Jerzy; Puczyłowski, Edmund R. Quasi-duo skew polynomial rings. (English) Zbl 1143.16024 J. Pure Appl. Algebra 212, No. 8, 1951-1959 (2008). Reviewer: Vyacheslav A. Artamonov (Moskva) MSC: 16S36 16D25 16U80 PDFBibTeX XMLCite \textit{A. Leroy} et al., J. Pure Appl. Algebra 212, No. 8, 1951--1959 (2008; Zbl 1143.16024) Full Text: DOI arXiv
Puczyłowski, E. R.; Wiegandt, R. Kostia’s contribution to radical theory and related topics. (English) Zbl 1130.16015 Chebotar, Mikhail (ed.) et al., Rings and nearrings. Proceedings of the international conference of algebra in memory of Kostia Beidar, Tainan, Taiwan, March 6–12, 2005. Berlin: Walter de Gruyter (ISBN 978-3-11-019952-9/hbk). 121-157 (2007). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16N80 01A70 16N20 16N40 16N60 16W10 17A60 17A65 17D05 PDFBibTeX XMLCite \textit{E. R. Puczyłowski} and \textit{R. Wiegandt}, in: Rings and nearrings. Proceedings of the international conference of algebra in memory of Kostia Beidar, Tainan, Taiwan, March 6--12, 2005. Berlin: Walter de Gruyter. 121--157 (2007; Zbl 1130.16015)
France-Jackson, H.; Mazurek, R.; Puczyłowski, E. R. On extensions of chain algebras and atoms of the lattice of radicals. (English) Zbl 1126.16008 Commun. Algebra 35, No. 9, 2707-2718 (2007). Reviewer: Stefan Veldsman (Al-Khodh) MSC: 16N80 16S70 06B15 16D80 PDFBibTeX XMLCite \textit{H. France-Jackson} et al., Commun. Algebra 35, No. 9, 2707--2718 (2007; Zbl 1126.16008) Full Text: DOI
Puczyłowski, Edmund R. Questions related to Koethe’s nil ideal problem. (English) Zbl 1133.16018 Huynh, Dinh V. (ed.) et al., Algebra and its applications. Proceedings of the international conference, Athens, OH, USA, March 22–26, 2005. Providence, RI: American Mathematical Society (AMS) (ISBN 0-8218-3842-3/pbk). Contemporary Mathematics 419, 269-283 (2006). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16N40 16N80 16-02 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Contemp. Math. 419, 269--283 (2006; Zbl 1133.16018)
Filipowicz, M.; Puczyłowski, E. R. On the upper radical determined by filial rings. (English) Zbl 1112.16023 Acta Math. Hung. 112, No. 3, 227-236 (2006). Reviewer: Andrei Marcus (Cluj-Napoca) MSC: 16N80 16D25 PDFBibTeX XMLCite \textit{M. Filipowicz} and \textit{E. R. Puczyłowski}, Acta Math. Hung. 112, No. 3, 227--236 (2006; Zbl 1112.16023) Full Text: DOI
Filipowicz, M.; Puczyłowski, E. R. On filial and left filial rings. (English) Zbl 1081.16001 Publ. Math. Debr. 66, No. 3-4, 257-267 (2005). Reviewer: Andrei Marcus (Cluj-Napoca) MSC: 16D25 16N80 16D70 PDFBibTeX XMLCite \textit{M. Filipowicz} and \textit{E. R. Puczyłowski}, Publ. Math. Debr. 66, No. 3--4, 257--267 (2005; Zbl 1081.16001)
Kępczyk, M.; Puczyłowski, E. R. On the structure of rings which are sums of two subrings. (English) Zbl 1087.16004 Arch. Math. 83, No. 5, 429-436 (2004). Reviewer: L. A. Bokut’ (Novosibirsk) MSC: 16D70 16D25 16N40 PDFBibTeX XMLCite \textit{M. Kępczyk} and \textit{E. R. Puczyłowski}, Arch. Math. 83, No. 5, 429--436 (2004; Zbl 1087.16004) Full Text: DOI
Filipowicz, M.; Puczyłowski, E. R. Left filial rings. (English) Zbl 1079.16001 Algebra Colloq. 11, No. 3, 335-344 (2004). Reviewer: Stefan Veldsman (Al-Khodh) MSC: 16D25 16N80 16D70 16N40 16S70 PDFBibTeX XMLCite \textit{M. Filipowicz} and \textit{E. R. Puczyłowski}, Algebra Colloq. 11, No. 3, 335--344 (2004; Zbl 1079.16001)
Beidar, K. I.; Ke, W. F.; Puczyłowski, E. R. On matrix rings and subhereditary radicals. (English) Zbl 1070.16023 Commun. Algebra 32, No. 7, 2827-2839 (2004). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16N80 16S50 PDFBibTeX XMLCite \textit{K. I. Beidar} et al., Commun. Algebra 32, No. 7, 2827--2839 (2004; Zbl 1070.16023) Full Text: DOI
Beidar, K. I.; Fong, Y.; Puczyłowski, E. R. On essential extensions of reduced rings and domains. (English) Zbl 1065.16004 Arch. Math. 83, No. 4, 344-352 (2004). Reviewer: Stefan Veldsman (Al-Khodh) MSC: 16D80 16U10 16N80 16D25 16D70 PDFBibTeX XMLCite \textit{K. I. Beidar} et al., Arch. Math. 83, No. 4, 344--352 (2004; Zbl 1065.16004) Full Text: DOI
Filipowicz, M.; Puczyłowski, E. R. When is the lower radical determined by a set of rings strong? (English) Zbl 1057.16015 Glasg. Math. J. 46, No. 2, 371-378 (2004). Reviewer: Stefan Veldsman (Al-Khodh) MSC: 16N80 PDFBibTeX XMLCite \textit{M. Filipowicz} and \textit{E. R. Puczyłowski}, Glasg. Math. J. 46, No. 2, 371--378 (2004; Zbl 1057.16015) Full Text: DOI
Dooms, A.; Puczyłowski, E. R. On homogeneity of radicals of semigroup algebras. (English) Zbl 1069.16022 Semigroup Forum 68, No. 2, 311-313 (2004). MSC: 16N80 20M25 16S36 PDFBibTeX XMLCite \textit{A. Dooms} and \textit{E. R. Puczyłowski}, Semigroup Forum 68, No. 2, 311--313 (2004; Zbl 1069.16022) Full Text: DOI
Beidar, K. I.; Puczyłowski, E. R.; Wiegandt, R. Radicals and polynomial rings. (English) Zbl 1007.16012 J. Aust. Math. Soc. 72, No. 1, 23-31 (2002). Reviewer: Halina France-Jackson (Port Elizabeth) MSC: 16N40 16N80 16N20 16N60 16S36 PDFBibTeX XMLCite \textit{K. I. Beidar} et al., J. Aust. Math. Soc. 72, No. 1, 23--31 (2002; Zbl 1007.16012) Full Text: DOI
Beidar, K. I.; Ke, W.-F.; Puczyłowski, E. R. On subhereditary radicals and reduced rings. (English) Zbl 0999.16017 Proc. R. Soc. Edinb., Sect. A, Math. 132, No. 2, 255-266 (2002). Reviewer: Siamak Yassemi (Tehran) MSC: 16N80 PDFBibTeX XMLCite \textit{K. I. Beidar} et al., Proc. R. Soc. Edinb., Sect. A, Math. 132, No. 2, 255--266 (2002; Zbl 0999.16017) Full Text: DOI
Smoktunowicz, Agata; Puczyłowski, E. R. A polynomial ring that is Jacobson radical and not nil. (English) Zbl 1036.16020 Isr. J. Math. 124, 317-325 (2001). Reviewer: Iuliu Crivei (Cluj-Napoca) MSC: 16N40 16N20 16S36 PDFBibTeX XMLCite \textit{A. Smoktunowicz} and \textit{E. R. Puczyłowski}, Isr. J. Math. 124, 317--325 (2001; Zbl 1036.16020) Full Text: DOI
Kępczyk, M.; Puczyłowski, E. R. Rings which are sums of two subrings satisfying polynomial identities. (English) Zbl 0993.16017 Commun. Algebra 29, No. 5, 2059-2065 (2001). Reviewer: Matyas Domokos (Edinburgh) MSC: 16R20 16R40 16N40 PDFBibTeX XMLCite \textit{M. Kępczyk} and \textit{E. R. Puczyłowski}, Commun. Algebra 29, No. 5, 2059--2065 (2001; Zbl 0993.16017) Full Text: DOI
Beidar, K. I.; Fong, Y.; Puczyłowski, E. R. Polynomial rings over nil rings cannot be homomorphically mapped onto rings with nonzero idempotents. (English) Zbl 0996.16015 J. Algebra 238, No. 1, 389-399 (2001). Reviewer: Richard Wiegandt (Budapest) MSC: 16N40 16N80 16W20 16S50 16S36 PDFBibTeX XMLCite \textit{K. I. Beidar} et al., J. Algebra 238, No. 1, 389--399 (2001; Zbl 0996.16015) Full Text: DOI
Puczyłowski, E. R.; Zand, H. Subhereditary radicals of associative rings. (English) Zbl 0969.16008 Algebra Colloq. 6, No. 2, 215-223 (1999). Reviewer: Richard Wiegandt (Budapest) MSC: 16N80 PDFBibTeX XMLCite \textit{E. R. Puczyłowski} and \textit{H. Zand}, Algebra Colloq. 6, No. 2, 215--223 (1999; Zbl 0969.16008)
Puczyłowski, Edmund R. Some results and questions on nil rings. (English) Zbl 0971.16012 Mat. Contemp. 16, 265-280 (1999). Reviewer: Jan Okniński (Warszawa) MSC: 16N40 16S36 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Mat. Contemp. 16, 265--280 (1999; Zbl 0971.16012)
Puczyłowski, E. R.; Smoktunowicz, Agata The nil radical of power series rings. (English) Zbl 0934.16016 Isr. J. Math. 110, 317-324 (1999). Reviewer: Rebecca Slover-Crittenden (Blacksburg) MSC: 16N40 16W60 PDFBibTeX XMLCite \textit{E. R. Puczyłowski} and \textit{A. Smoktunowicz}, Isr. J. Math. 110, 317--324 (1999; Zbl 0934.16016) Full Text: DOI
Kępczyk, M.; Puczyłowski, E. R. Rings which are sums of two subrings. (English) Zbl 0929.16017 J. Pure Appl. Algebra 133, No. 1-2, 151-162 (1998). Reviewer: Rebecca Slover-Crittenden (Blacksburg) MSC: 16N20 16R40 16W99 12F99 16P60 16D70 PDFBibTeX XMLCite \textit{M. Kępczyk} and \textit{E. R. Puczyłowski}, J. Pure Appl. Algebra 133, No. 1--2, 151--162 (1998; Zbl 0929.16017) Full Text: DOI
Puczyłowski, E. R.; Smoktunowicz, Agata On maximal ideals and the Brown-McCoy radical of polynomial rings. (English) Zbl 0909.16015 Commun. Algebra 26, No. 8, 2473-2482 (1998). Reviewer: Jan Okniński (St.John’s) MSC: 16N60 16S36 16D25 PDFBibTeX XMLCite \textit{E. R. Puczyłowski} and \textit{A. Smoktunowicz}, Commun. Algebra 26, No. 8, 2473--2482 (1998; Zbl 0909.16015) Full Text: DOI
Ferrero, Miguel; Puczyłowski, Edmund R. The singular ideal and radicals. (English) Zbl 0907.16005 J. Aust. Math. Soc., Ser. A 64, No. 2, 195-209 (1998). Reviewer: Richard Wiegandt (Budapest) MSC: 16N80 16D80 16N60 PDFBibTeX XMLCite \textit{M. Ferrero} and \textit{E. R. Puczyłowski}, J. Aust. Math. Soc., Ser. A 64, No. 2, 195--209 (1998; Zbl 0907.16005)
Beidar, K. I.; Puczyłowski, E. R.; Smith, P. F. Krull dimension of modules over involution rings. II. (English) Zbl 0864.16030 Proc. Am. Math. Soc. 125, No. 2, 355-361 (1997). Reviewer: C.Lanski (Los Angeles) MSC: 16W10 16P60 16P20 PDFBibTeX XMLCite \textit{K. I. Beidar} et al., Proc. Am. Math. Soc. 125, No. 2, 355--361 (1997; Zbl 0864.16030) Full Text: DOI
Mazurek, R.; Puczyłowski, E. R. On semidistributive rings. (English) Zbl 0883.16011 Commun. Algebra 25, No. 11, 3463-3471 (1997). Reviewer: A.I.Kashu (Kishinev) MSC: 16N40 16D25 16P70 16N20 16D70 PDFBibTeX XMLCite \textit{R. Mazurek} and \textit{E. R. Puczyłowski}, Commun. Algebra 25, No. 11, 3463--3471 (1997; Zbl 0883.16011) Full Text: DOI
Andruszkiewicz, R. R.; Puczyłowski, E. R. Accessible subrings and Kurosh’s chains of associative rings. (English) Zbl 0876.16015 Algebra Colloq. 4, No. 1, 79-88 (1997). Reviewer: R.Wiegandt (Budapest) MSC: 16N80 13B22 13G05 PDFBibTeX XMLCite \textit{R. R. Andruszkiewicz} and \textit{E. R. Puczyłowski}, Algebra Colloq. 4, No. 1, 79--88 (1997; Zbl 0876.16015)
Kępczyk, M.; Puczyłowski, E. R. On radicals of rings which are sums of two subrings. (English) Zbl 0860.16016 Arch. Math. 66, No. 1, 8-12 (1996). Reviewer: R.Slover-Crittenden (Blacksburg) MSC: 16N80 16N40 PDFBibTeX XMLCite \textit{M. Kępczyk} and \textit{E. R. Puczyłowski}, Arch. Math. 66, No. 1, 8--12 (1996; Zbl 0860.16016) Full Text: DOI
Ferrero, M.; Puczyłowski, E. R.; Sidki, S. On the representation of an idempotent as a sum of nilpotent elements. (English) Zbl 0859.16027 Can. Math. Bull. 39, No. 2, 178-185 (1996). Reviewer: J.Okniński (Warszawa) MSC: 16U99 16S15 16N40 PDFBibTeX XMLCite \textit{M. Ferrero} et al., Can. Math. Bull. 39, No. 2, 178--185 (1996; Zbl 0859.16027) Full Text: DOI
Puczyłowski, E. R.; Zand, H. The Brown-McCoy radical and one-sided ideals. (English) Zbl 0853.16024 Quaest. Math. 19, No. 1-2, 47-58 (1996). Reviewer: A.I.Kashu (Kishinev) MSC: 16N80 PDFBibTeX XMLCite \textit{E. R. Puczyłowski} and \textit{H. Zand}, Quaest. Math. 19, No. 1--2, 47--58 (1996; Zbl 0853.16024) Full Text: DOI
Ferrero, Miguel; Puczyłowski, Edmund R. Prime ideals and radicals of centred extensions and tensor products. (English) Zbl 0856.16022 Isr. J. Math. 94, 381-401 (1996). Reviewer: M.Lorenz (Philadelphia) MSC: 16S20 16N60 16N80 16D25 16S90 PDFBibTeX XMLCite \textit{M. Ferrero} and \textit{E. R. Puczyłowski}, Isr. J. Math. 94, 381--401 (1996; Zbl 0856.16022) Full Text: DOI
Puczyłowski, E. R.; Zand, H. On squares of Jacobson radical rings. (English) Zbl 0861.16013 Bull. Aust. Math. Soc. 53, No. 2, 299-303 (1996). Reviewer: R.Slover-Crittenden (Blacksburg) MSC: 16N20 16N40 PDFBibTeX XMLCite \textit{E. R. Puczyłowski} and \textit{H. Zand}, Bull. Aust. Math. Soc. 53, No. 2, 299--303 (1996; Zbl 0861.16013) Full Text: DOI
Andruszkiewicz, R. R.; Puczyłowski, E. R. Right fully idempotent rings need not be left fully idempotent. (English) Zbl 0830.16011 Glasg. Math. J. 37, No. 2, 155-157 (1995). Reviewer: J.Clark (Dunedin) MSC: 16E50 16D30 16N80 PDFBibTeX XMLCite \textit{R. R. Andruszkiewicz} and \textit{E. R. Puczyłowski}, Glasg. Math. J. 37, No. 2, 155--157 (1995; Zbl 0830.16011) Full Text: DOI
Andruszkiewicz, R. R.; Puczyłowski, E. R. On commutative idempotent rings. (English) Zbl 0826.16017 Proc. R. Soc. Edinb., Sect. A 125, No. 2, 341-349 (1995). Reviewer: R.Slover-Crittenden (Blacksburg) MSC: 16N80 13A10 PDFBibTeX XMLCite \textit{R. R. Andruszkiewicz} and \textit{E. R. Puczyłowski}, Proc. R. Soc. Edinb., Sect. A, Math. 125, No. 2, 341--349 (1995; Zbl 0826.16017) Full Text: DOI
Grzeszczuk, Piotr; Puczyłowski, Edmund R. A radical of lattices and its applications to rings and modules. (English) Zbl 0886.16022 Contributions to general algebra 9. Proceedings of the conference, Linz, Austria, June 1994. Wien: Hölder-Pichler-Tempsky, 203-212 (1995). MSC: 16N80 06B05 PDFBibTeX XMLCite \textit{P. Grzeszczuk} and \textit{E. R. Puczyłowski}, Contrib. Gen. Algebra 9, 203--212 (1995; Zbl 0886.16022)
Puczyłowski, Edmund R. Radicals of a ring. (English) Zbl 0812.16028 Commun. Algebra 22, No. 13, 5419-5436 (1994). Reviewer: R.Slover Crittenden (Blacksburg) MSC: 16N80 16D25 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Commun. Algebra 22, No. 13, 5419--5436 (1994; Zbl 0812.16028) Full Text: DOI
Beidar, K. I.; Puczyłowski, E. R.; Smith, P. F. Krull dimension of modules over involution rings. (English) Zbl 0805.16032 Proc. Am. Math. Soc. 121, No. 2, 391-397 (1994). Reviewer: C.Lanski (Los Angeles) MSC: 16W10 16P60 PDFBibTeX XMLCite \textit{K. I. Beidar} et al., Proc. Am. Math. Soc. 121, No. 2, 391--397 (1994; Zbl 0805.16032) Full Text: DOI
Puczyłowski, E. R. Some questions concerning radicals of associative rings. (English) Zbl 0806.16021 Márki, László (ed.) et al., Theory of radicals. Amsterdam: North- Holland Publishing Company. Colloq. Math. Soc. János Bolyai. 61, 209-227 (1993). Reviewer: R.Slover Crittenden (Blacksburg) MSC: 16N80 16N20 16N40 16-02 00A07 16N60 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, in: Theory of radicals. Amsterdam: North-Holland Publishing Company; Budapest: János Bolyai Mathematical Society. 209--227 (1993; Zbl 0806.16021)
Puczyłowski, E. R. On general theory of radicals. (English) Zbl 0784.08009 Algebra Univers. 30, No. 1, 53-60 (1993). Reviewer: E.R.Puczyłowski MSC: 08C05 03C05 16N80 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Algebra Univers. 30, No. 1, 53--60 (1993; Zbl 0784.08009) Full Text: DOI
Puczyłowski, E. R. On the left hereditariness of pseudocomplement of hereditary radicals. (English) Zbl 0801.16020 Stud. Sci. Math. Hung. 27, No. 1-2, 201-205 (1992). Reviewer: R.Slover Crittenden (Blacksburg) MSC: 16N40 16N20 16N80 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Stud. Sci. Math. Hung. 27, No. 1--2, 201--205 (1992; Zbl 0801.16020)
Puczyłowski, Edmund R.; Roszkowska, Ewa On atoms and coatoms of lattices of radicals of associative rings. (English) Zbl 0752.16010 Commun. Algebra 20, No. 4, 955-977 (1992). Reviewer: R.Wiegandt (Budapest) MSC: 16N80 PDFBibTeX XMLCite \textit{E. R. Puczyłowski} and \textit{E. Roszkowska}, Commun. Algebra 20, No. 4, 955--977 (1992; Zbl 0752.16010) Full Text: DOI
Puczyłowski, Edmund R. On normal classes of rings. (English) Zbl 0792.16022 Commun. Algebra 20, No. 10, 2999-3013 (1992). Reviewer: N.Divinsky (Vancouver) MSC: 16N60 16N80 16D90 16D60 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Commun. Algebra 20, No. 10, 2999--3013 (1992; Zbl 0792.16022) Full Text: DOI
Horváth, E.; Puczyłowski, E. R. Some remarks on simple rings. (English) Zbl 0725.16007 Boll. Unione Mat. Ital., VII. Ser., A 5, No. 1, 83-87 (1991). Reviewer: R.Wiegandt (Budapest) MSC: 16D60 16N60 PDFBibTeX XMLCite \textit{E. Horváth} and \textit{E. R. Puczyłowski}, Boll. Unione Mat. Ital., VII. Ser., A 5, No. 1, 83--87 (1991; Zbl 0725.16007)
Jespers, Eric; Puczyłowski, Edmund R. The Jacobson and Brown-McCoy radicals of rings graded by free groups. (English) Zbl 0721.16023 Commun. Algebra 19, No. 2, 551-558 (1991). Reviewer: M.Beattie (Sackville) MSC: 16W50 16N20 16N40 16S36 PDFBibTeX XMLCite \textit{E. Jespers} and \textit{E. R. Puczyłowski}, Commun. Algebra 19, No. 2, 551--558 (1991; Zbl 0721.16023) Full Text: DOI
Jespers, Eric; Puczyłowski, Edmund On ideals of tensor products. (English) Zbl 0739.16014 J. Algebra 140, No. 1, 124-130 (1991). Reviewer: R.Slover Crittenden (Blacksburg) MSC: 16N60 16N20 16D25 PDFBibTeX XMLCite \textit{E. Jespers} and \textit{E. Puczyłowski}, J. Algebra 140, No. 1, 124--130 (1991; Zbl 0739.16014) Full Text: DOI
Puczyłowski, Edmund R. A note on graded algebras. (English) Zbl 0761.16015 Proc. Am. Math. Soc. 113, No. 1, 1-3 (1991). MSC: 16W50 16N40 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Proc. Am. Math. Soc. 113, No. 1, 1--3 (1991; Zbl 0761.16015) Full Text: DOI Link
Ferrero, Miguel; Jespers, Eric; Puczyłowski, Edmund R. Prime ideals of graded rings and related matters. (English) Zbl 0728.16023 Commun. Algebra 18, No. 11, 3819-3834 (1990). Reviewer: J.Okniński (Warszawa) MSC: 16W50 16D25 16N60 PDFBibTeX XMLCite \textit{M. Ferrero} et al., Commun. Algebra 18, No. 11, 3819--3834 (1990; Zbl 0728.16023) Full Text: DOI
Mazurek, R.; Puczyłowski, E. R. On nilpotent elements of distributive rings. (English) Zbl 0715.16002 Commun. Algebra 18, No. 2, 463-471 (1990). Reviewer: W.M.Cunnea MSC: 16D25 16N40 PDFBibTeX XMLCite \textit{R. Mazurek} and \textit{E. R. Puczyłowski}, Commun. Algebra 18, No. 2, 463--471 (1990; Zbl 0715.16002) Full Text: DOI
Andruszkiewicz, R. R.; Puczyłowski, E. R. Kurosh’s chains of associative rings. (English) Zbl 0695.16004 Glasg. Math. J. 32, No. 1, 67-69 (1990). Reviewer: N.Divinsky MSC: 16Nxx PDFBibTeX XMLCite \textit{R. R. Andruszkiewicz} and \textit{E. R. Puczyłowski}, Glasg. Math. J. 32, No. 1, 67--69 (1990; Zbl 0695.16004) Full Text: DOI
Puczyłowski, Edmund R.; Roszkowska, Ewa Atoms of lattices of radicals of associative rings. (English) Zbl 0718.16014 Radical theory, Proc. Int. Conf., Sendai/Jap. 1988, 123-134 (1989). Reviewer: R.Wiegandt (Budapest) MSC: 16N80 06B99 16D60 PDFBibTeX XML
Grzeszczuk, Piotr; Puczyłowski, Edmund R. Gabriel and Krull dimensions of modules over rings graded by finite groups. (English) Zbl 0698.16018 Proc. Am. Math. Soc. 105, No. 1, 17-24 (1989). Reviewer: M.Cohen MSC: 16P60 16W50 06C05 PDFBibTeX XMLCite \textit{P. Grzeszczuk} and \textit{E. R. Puczyłowski}, Proc. Am. Math. Soc. 105, No. 1, 17--24 (1989; Zbl 0698.16018) Full Text: DOI
Ferrero, Miguel; Puczyłowski, Edmund R. On rings which are sums of two subrings. (English) Zbl 0645.16005 Arch. Math. 53, No. 1, 4-10 (1989). Reviewer: M.Ferrero MSC: 16N40 16D70 16Nxx PDFBibTeX XMLCite \textit{M. Ferrero} and \textit{E. R. Puczyłowski}, Arch. Math. 53, No. 1, 4--10 (1989; Zbl 0645.16005) Full Text: DOI
Puczyłowski, Edmund R. Nil algebras with nonradical tensor square. (English) Zbl 0661.16006 Proc. Am. Math. Soc. 103, No. 2, 401-403 (1988). Reviewer: Dinh van Huynh MSC: 16N40 15A72 16Nxx PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Proc. Am. Math. Soc. 103, No. 2, 401--403 (1988; Zbl 0661.16006) Full Text: DOI
Andruszkiewicz, R.; Puczylowski, E. R. On filial rings. (English) Zbl 0653.16024 Port. Math. 45, No. 2, 139-149 (1988). Reviewer: L.Bican MSC: 16Dxx 16N40 PDFBibTeX XMLCite \textit{R. Andruszkiewicz} and \textit{E. R. Puczylowski}, Port. Math. 45, No. 2, 139--149 (1988; Zbl 0653.16024) Full Text: EuDML
Puczyłowski, Edmund R. On questions concerning strong radicals of associative rings. (English) Zbl 0628.16007 Quaest. Math. 10, 321-338 (1987). Reviewer: R.Wiegandt MSC: 16Nxx 16N40 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Quaest. Math. 10, 321--338 (1987; Zbl 0628.16007) Full Text: DOI
Puczyłowski, E. R. On essential extensions of rings. (English) Zbl 0603.16020 Bull. Aust. Math. Soc. 35, 379-386 (1987). Reviewer: L.C.A.van Leeuwen MSC: 16S20 16Nxx 16Dxx 16P60 16P10 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Bull. Aust. Math. Soc. 35, 379--386 (1987; Zbl 0603.16020) Full Text: DOI
Puczyłowski, E. R. A note on almost nilpotent rings. (English) Zbl 0614.16006 Acta Math. Hung. 48, 289-291 (1986). Reviewer: G.Tzintzis MSC: 16Nxx 16N40 16Dxx PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Acta Math. Hung. 48, 289--291 (1986; Zbl 0614.16006) Full Text: DOI
Puczyłowski, Edmund R. Radicals of semigroup algebras of commutative and cancellative semigroups. (English) Zbl 0613.20044 Proc. R. Soc. Edinb., Sect. A 103, 317-323 (1986). Reviewer: J.Okniński MSC: 20M25 20M14 16Nxx PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Proc. R. Soc. Edinb., Sect. A, Math. 103, 317--323 (1986; Zbl 0613.20044) Full Text: DOI
Grzeszczuk, Piotr; Puczyłowski, Edmund R. Goldie dimension and chain conditions for modular lattices with finite group actions. (English) Zbl 0612.06006 Can. Math. Bull. 29, 274-280 (1986). Reviewer: M.Cohen MSC: 06C05 16W20 16W50 16E10 PDFBibTeX XMLCite \textit{P. Grzeszczuk} and \textit{E. R. Puczyłowski}, Can. Math. Bull. 29, 274--280 (1986; Zbl 0612.06006) Full Text: DOI
Puczyłowski, E. R. On Sands’ questions concerning strong and hereditary radicals. (English) Zbl 0581.16005 Glasg. Math. J. 28, 1-3 (1986). Reviewer: N.Divinsky MSC: 16Nxx 16N60 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Glasg. Math. J. 28, 1--3 (1986; Zbl 0581.16005) Full Text: DOI
Puczyłowski, E. R. Behaviour of radical properties of rings under some algebraic constructions. (English) Zbl 0607.16006 Radical theory, Proc. 1st Conf., Eger/Hung. 1982, Colloq. Math. Soc. János Bolyai 38, 449-480 (1985). Reviewer: J.S.Ponizovskij MSC: 16Nxx 16W60 16D60 16S20 16W50 16N60 20M25 PDFBibTeX XML
Grzeszczuk, P.; Puczyłowski, E. R. On infinite Goldie dimension of modular lattices and modules. (English) Zbl 0562.16014 J. Pure Appl. Algebra 35, 151-155 (1985). Reviewer: T.Albu MSC: 16P60 06C05 PDFBibTeX XMLCite \textit{P. Grzeszczuk} and \textit{E. R. Puczyłowski}, J. Pure Appl. Algebra 35, 151--155 (1985; Zbl 0562.16014) Full Text: DOI
Puczyłowski, E. R. On semisimple classes of associative and alternative rings. (English) Zbl 0545.16006 Proc. Edinb. Math. Soc., II. Ser. 27, 1-5 (1984). Reviewer: R.Wiegandt MSC: 16Nxx 17A65 17D05 PDFBibTeX XMLCite \textit{E. R. Puczyłowski}, Proc. Edinb. Math. Soc., II. Ser. 27, 1--5 (1984; Zbl 0545.16006) Full Text: DOI
Jespers, Eric; Puczyłowski, Edmund R. The Jacobson radical of semigroup rings of commutative cancellative semigroups. (English) Zbl 0542.20042 Commun. Algebra 12, 1115-1123 (1984). Reviewer: S.Lajos MSC: 20M25 16Nxx PDFBibTeX XMLCite \textit{E. Jespers} and \textit{E. R. Puczyłowski}, Commun. Algebra 12, 1115--1123 (1984; Zbl 0542.20042) Full Text: DOI
Puczyłowski, Edmund On fixed rings of automorphisms. (English) Zbl 0534.16031 Proc. Am. Math. Soc. 90, 517-518 (1984). Reviewer: S.A.Huq MSC: 16W20 16Nxx PDFBibTeX XMLCite \textit{E. Puczyłowski}, Proc. Am. Math. Soc. 90, 517--518 (1984; Zbl 0534.16031) Full Text: DOI
Puczylowski, Edmund R. Nil ideals of power series rings. (English) Zbl 0522.16005 J. Aust. Math. Soc., Ser. A 34, 287-292 (1983). MSC: 16W60 16Nxx 16N40 PDFBibTeX XMLCite \textit{E. R. Puczylowski}, J. Aust. Math. Soc., Ser. A 34, 287--292 (1983; Zbl 0522.16005)
Puczylowski, Edmund R. Radicals of polynomial rings in non-commutative indeterminates. (English) Zbl 0488.16001 Math. Z. 182, 63-67 (1983). MSC: 16W60 16Nxx PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Math. Z. 182, 63--67 (1983; Zbl 0488.16001) Full Text: DOI EuDML
Puczylowski, E. R. On radicals of semigroup rings. (English) Zbl 0516.16003 Acta Math. Acad. Sci. Hung. 40, 261-265 (1982). MSC: 16Nxx 20M25 PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Acta Math. Acad. Sci. Hung. 40, 261--265 (1982; Zbl 0516.16003) Full Text: DOI
Jespers, Eric; Krempa, Jan; Puczylowski, Edmund R. On radicals of graded rings. (English) Zbl 0493.16003 Commun. Algebra 10, 1849-1854 (1982). MSC: 16W50 16Nxx 20M25 PDFBibTeX XMLCite \textit{E. Jespers} et al., Commun. Algebra 10, 1849--1854 (1982; Zbl 0493.16003) Full Text: DOI
Puczylowski, Edmund R. A note on hereditary radicals. (English) Zbl 0488.16008 Acta Sci. Math. 44, 133-135 (1982). MSC: 16Nxx PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Acta Sci. Math. 44, 133--135 (1982; Zbl 0488.16008)
Puczylowski, E. R. Hereditariness of strong and stable radicals. (English) Zbl 0472.16004 Glasg. Math. J. 23, 85-90 (1982). MSC: 16Nxx PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Glasg. Math. J. 23, 85--90 (1982; Zbl 0472.16004) Full Text: DOI
Puczylowski, E. R. Radicals of rings and their subrings. (English) Zbl 0467.16011 Proc. Edinb. Math. Soc., II. Ser. 24, 209-215 (1981). MSC: 16Nxx PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Proc. Edinb. Math. Soc., II. Ser. 24, 209--215 (1981; Zbl 0467.16011) Full Text: DOI
Puczylowski, Edmund R. On radicals of tensor products. (English) Zbl 0466.16007 Bull. Acad. Pol. Sci., Sér. Sci. Math. 28, 243-247 (1980). MSC: 16Nxx 16D70 20M25 16W20 PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Bull. Acad. Pol. Sci., Sér. Sci. Math. 28, 243--247 (1980; Zbl 0466.16007)
Puczylowski, E. R. On unequivocal rings. (English) Zbl 0464.16005 Acta Math. Acad. Sci. Hung. 36, 57-62 (1980). MSC: 16Nxx 16N40 16D70 PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Acta Math. Acad. Sci. Hung. 36, 57--62 (1980; Zbl 0464.16005) Full Text: DOI
Puczylowski, Edmund R. Remarks on stable radicals. (English) Zbl 0459.16004 Bull. Acad. Pol. Sci., Sér. Sci. Math. 28, 11-16 (1980). MSC: 16Nxx PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Bull. Acad. Pol. Sci., Sér. Sci. Math. 28, 11--16 (1980; Zbl 0459.16004)
Puczylowski, E. R. Radicals of polynomial rings, power series rings and tensor products. (English) Zbl 0442.16008 Commun. Algebra 8, 1699-1709 (1980). MSC: 16Nxx 16W60 PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Commun. Algebra 8, 1699--1709 (1980; Zbl 0442.16008) Full Text: DOI
Puczylowski, Edmund R. On lower strong radicals in alternative algebras. (English) Zbl 0403.17016 Bull. Acad. Pol. Sci., Sér. Sci. Math. Astron. Phys. 26, 477-482 (1978). MSC: 17D05 17A65 16Nxx PDFBibTeX XMLCite \textit{E. R. Puczylowski}, Bull. Acad. Pol. Sci., Sér. Sci. Math. Astron. Phys. 26, 477--482 (1978; Zbl 0403.17016)