| Title: | Ext and von Neumann regular rings (English) | 
| Author: | Trlifaj, Jan | 
| Language: | English | 
| Journal: | Czechoslovak Mathematical Journal | 
| ISSN: | 0011-4642 (print) | 
| ISSN: | 1572-9141 (online) | 
| Volume: | 35 | 
| Issue: | 2 | 
| Year: | 1985 | 
| Pages: | 324-332 | 
| Summary lang: | Russian | 
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| Category: | math | 
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| MSC: | 16A30 | 
| MSC: | 16A63 | 
| MSC: | 18E40 | 
| idZBL: | Zbl 0577.16007 | 
| idMR: | MR787134 | 
| DOI: | 10.21136/CMJ.1985.102020 | 
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| Date available: | 2008-06-09T15:05:19Z | 
| Last updated: | 2020-07-28 | 
| Stable URL: | http://hdl.handle.net/10338.dmlcz/102020 | 
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| Reference: | [2] L. Bican T. Kepka, P. Němec: Rings, modules, and preradicals.M. Dekker Inc., New York-Basel, 1982. MR 0655412 | 
| Reference: | [3] H. Cartan, S. Eilenberg: Homological algebra.Princeton University Press, Princeton, 1956. Zbl 0075.24305, MR 0077480 | 
| Reference: | [4] S. E. Dickson: A torsion theory for abelian categories.Trans. Amer. Math. Soc. 121 (1966), 223-235. Zbl 0138.01801, MR 0191935, 10.1090/S0002-9947-1966-0191935-0 | 
| Reference: | [5] P. C. Eklof: Homological algebra and set theory.Trans. Amer. Math. Soc. 227 (1977), 207--225. Zbl 0355.02047, MR 0453520, 10.1090/S0002-9947-1977-0453520-X | 
| Reference: | [6] B. J. Gardner: Rings whose modules form few torsion classes.Bull. Austral. Math. Soc. 4 (1971), 355-359. Zbl 0209.07304, MR 0280547, 10.1017/S0004972700046700 | 
| Reference: | [7] K. R. Goodearl: Von Neumann regular rings.Pitman, London-San Francisco-Melbourne, 1979. Zbl 0411.16007, MR 0533669 | 
| Reference: | [8] P. Jambor: An orthogonal theory of a set-valued bifunctor.Czech. Math. J. 23 (1973), 447-454. Zbl 0271.18010, MR 0338123 | 
| Reference: | [9] P. Jambor: Hereditary tensor-orthogonal theories.Comment. Math. Univ. Carolinae 16 (1975), 139-145. Zbl 0303.16011, MR 0399149 | 
| Reference: | [10] S. Shelah: A compactness theorem for singular cardinals, free algebras. Whitehead problem and transversals.Israel J. Math. 21 (1975), 319-349. Zbl 0369.02034, MR 0389579, 10.1007/BF02757993 | 
| Reference: | [11] J. Trlifaj, T. Kepka: Structure of T-rings.in Radical Theory (Proc. Conf. Eger, 1982), Colloq. Math. Soc. Bolyai, North-Holland, Amsterdam, (to appear). MR 0899130 | 
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