Tag: short-exact-sequences

35 Do all exact $1 \to A \to A \times B \to B \to 1$ split for finite groups? 2011-11-04T03:26:41.060

28 (Short) Exact sequences with no commutative diagram between them 2014-02-18T15:35:08.623

20 Origin of exact sequences 2014-03-12T21:34:34.560

19 Homological Algebra for Commutative Monoids? 2009-10-13T16:23:02.830

18 When is the torsion subgroup of an abelian group a direct summand? 2011-04-04T07:10:42.460

16 Exact sequence of monoids 2011-12-09T22:36:35.133

15 What are the advantages of phrasing results in terms of exact sequences and commutative diagrams? 2010-04-18T01:08:22.383

15 Elementary short exact sequence of sheaves 2011-04-26T18:23:47.983

9 An "existence contra partition of unity" statement for integer matrices? 2009-10-16T09:26:04.957

8 Exact short sequences of vector spaces 2009-12-01T05:25:00.923

8 Can Lie algebra cohomology prove Cartan's Semisimplicity Criterion? 2011-01-10T00:19:57.053

8 Exact sequence of $n$th powers of abelian groups 2017-04-18T22:22:55.750

6 Does the Grothendieck group depend on the embedding? 2010-05-03T17:33:15.650

6 Exactness of completed tensor product of nuclear spaces 2012-01-21T21:32:30.157

6 Do all exact sequences $0 \rightarrow A \rightarrow A \oplus B \rightarrow B \rightarrow 0$ split for finitely generated abelian groups? 2014-05-20T15:37:19.233

4 Exact sequence of the fundamental group of the general fiber 2014-03-31T04:38:47.163

4 Exact sequence of groups to exact sequence of sheaves 2015-02-19T00:25:16.430

3 Canonical sheaf of the fiber of a flat morphism 2013-07-31T01:54:58.450

3 Splitting lemma for semigroups or monoids 2014-06-03T22:33:24.930

3 Is the square diagram of index and exponential maps in $K$-theory of $C^*$-algebras anti-commutative? 2014-10-27T02:57:42.367

3 Short exact sequences for amalgamated free products and HNN Extensions 2015-11-28T11:37:17.073

3 busby invariant of extensions of $C^*$-algebras 2016-05-29T06:40:52.770

2 Splitting lemma under assumption of the axiom of choice 2009-11-15T22:16:10.377

2 Finite / uniquely divisible abelian groups 2012-12-15T17:21:09.547

2 Proof of Merkurjev's Theorem in "The Algebraic and Geometric Theory of Quadratic Forms" 2015-09-16T14:47:07.150

2 Profinite extension of a Lie group 2017-09-03T17:36:48.633

1 Topologically split extensions of topological groups 2011-04-22T09:34:30.207

1 What is exact sequence in higher categories? 2011-11-07T15:10:52.617

1 does s.e.s 0->A->B->C->0 of profinite groups imply C=B/A and A<B topologically? 2013-01-03T21:57:15.660

1 On (universal) additive functors making a given complex contractible: examples? 2015-08-20T09:06:19.740

1 Splitting Short exact sequences of vector bundle with connection 2016-09-30T23:46:44.567

0 short exact sequence of profinite groups 2017-02-24T20:04:52.207