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 Yearling
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Jul
12
comment Short exact sequences and different extension
@ Dietrich Burde Thank you.
Jul
12
accepted Short exact sequences and different extension
Jul
12
revised Short exact sequences and different extension
added 10 characters in body
Jul
12
comment Short exact sequences and different extension
Thank @ Sammy. Yes.
Jul
12
asked Short exact sequences and different extension
Jul
8
accepted Ext groups and Isomorphism
Jul
8
comment Ext groups and Isomorphism
Thanks @ Zev Chonoles. So when $0\rightarrow A \rightarrow X\rightarrow B \rightarrow 0$ splits, then $0\rightarrow C \rightarrow X \rightarrow D \rightarrow 0$ splits with the condition $A\cong C$ and $B\cong D.$
Jul
8
asked Ext groups and Isomorphism
Jun
23
awarded  Yearling
Jun
23
answered Partial order relation on the group of integers
Jun
10
comment Equivalent condition of spliting exact sequence of partially ordered groups
@ Pierre-Guy Plamondon Thank you. I am interested here about order homomorphism for $\gamma.$
Jun
7
asked Equivalent condition of spliting exact sequence of partially ordered groups
May
27
awarded  Popular Question
Jul
2
awarded  Curious
Nov
19
comment Invertible sheaves
Thank you all. @ Matt here $n_{p}$ is a coefficient of $P$ at $D,$ which is a integer.
Nov
19
comment Invertible sheaves
Thank you all. It seems $L_{D}(U)$ is an $\mathbb O_{X}(U)$-module.
Nov
19
revised Invertible sheaves
added 28 characters in body
Nov
19
asked Invertible sheaves
May
26
comment Existence of GCD in an integral domain
@ Arturo Magidin, I have small comment on the last paragraph of your answer. I think $D$ is a GCD domain if and only if group of divisibility is a lattice ordered group. This is the theorem by Krull, Kaplansky and Jaffard.
Feb
22
comment Finitely generated $k$-algebra
Thank you all .