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Nov
26
asked a problem in complex analysis on entire function
Nov
25
asked $A/I$ is an injective $A/I$-module, where $A$ is PID
Nov
20
answered Finitely generated projective module
Nov
18
awarded  Yearling
Nov
18
answered Free probability background requirements
Nov
18
comment one simple question in ring theory
Thanks! Now I see the point, further use the minimal condition.
Nov
18
accepted one simple question in ring theory
Nov
18
asked one simple question in ring theory
Nov
15
comment Seek results in group theory obtained by applping algebraic topology tools
@user1729, thanks for the reference. Just curiosity, your usename reminds me of the story of Ramanujan and the taxi number.
Nov
14
asked Seek results in group theory obtained by applping algebraic topology tools
Nov
10
asked number of subgroups up to isomorphism in a group $G$
Nov
8
comment p divides the index $[G: N_G(P)]$?
thanks for this answer, it seems a little tricky by choosing the action of P on the left coset space G\P by left multiplication. But I got it~
Nov
8
accepted p divides the index $[G: N_G(P)]$?
Nov
8
revised p divides the index $[G: N_G(P)]$?
deleted 151 characters in body
Nov
8
asked p divides the index $[G: N_G(P)]$?
Nov
2
awarded  Teacher
Nov
2
answered Find conditions for a polynomial $p$ to be in a vector space $U$
Oct
31
awarded  Editor
Oct
31
revised Seek hint on a problem on Jones' book
add "finite"
Oct
31
suggested approved edit on Seek hint on a problem on Jones' book