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7.7.19 nchomolog_lib
Status: experimental
- Library:
- nchomolog.lib
- Purpose:
- Procedures for Noncommutative Homological Algebra
- Authors:
- Viktor Levandovskyy levandov@math.rwth-aachen.de,
Christian Schilli, christian.schilli@rwth-aachen.de,
Gerhard Pfister, pfister@mathematik.uni-kl.de
- Overview:
- In this library we present tools of homological algebra for
finitely presented modules over GR-algebras.
Procedures:
| 7.7.19.0. ncExt_R | | computes presentation of Ext^k(M',R), M module, R basering, M'=coker(M) |
| 7.7.19.0. ncHom | | computes presentation of Hom(M',N'), M,N modules, M'=coker(M), N'=coker(N) |
| 7.7.19.0. coHom | | computes presentation of Hom(R^k,A), A matrix over basering R |
| 7.7.19.0. contraHom | | computes presentation of Hom(A,R^k), A matrix over basering R |
| 7.7.19.0. dmodoublext | | computes presentation of Ext_D^i(Ext_D^i(M,D),D), where D is a basering |
| 7.7.19.0. is_cenBimodule | | checks whether a module presented by M is Artin-centralizing |
| 7.7.19.0. is_cenSubbimodule | | checks whether a subbimodule M is Artin-centralizing |
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