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Homological algebra based on permutation modules

โœ Scribed by James E Arnold Jr.


Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
562 KB
Volume
70
Category
Article
ISSN
0021-8693

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Let โ€ be a set, R a ring of characteristic p ) 0, and denote by M the k R-module with k-element subsets of โ€ as basis. The set inclusion map is the homomorphism which associates to a k-element subset โŒฌ the sum qโŒซ of all its k y 1 -element subsets โŒซ . In this paper we arising from ัจ. We introduce