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Feb
13
comment Good textbooks on homological algebra
I would like to close this as I got satisfactory answers, but the close button above seems to be there for making complaints. How can I close this without making complaints?
Feb
13
accepted A counterexample to the going down theorem
Feb
13
comment Inverse limits of groups of units of a ring.
I just checked anon(ymous?)'s answer to close this, as I can do check for only one. At the same time I am grateful to Qiaochu for reminding me of adjoint functors.
Feb
13
accepted Inverse limits of groups of units of a ring.
Feb
13
accepted Question on adjoint functors
Feb
13
awarded  Scholar
Dec
25
comment Question on adjoint functors
Thanks a lot. I will track down the reasoning flow until I am convinced that I have understood.
Dec
25
comment Question on adjoint functors
Thanks! I will track down your hint together with the detail account by Najib Idrissi.
Dec
25
comment Question on adjoint functors
@Bruno Joyal No. The text treats abelian categories after setting up generalities on homology.
Dec
24
awarded  Yearling
Dec
24
asked Question on adjoint functors
Sep
21
asked Factor rings of polynomial rings
Sep
12
comment “Bad” primitive root $\bmod p^{2}$
Thank you very much for the clarification. I understand that, since the Artin conjecture for primitive roots is not resolved, my question is not resolved either.
Sep
11
revised “Bad” primitive root $\bmod p^{2}$
added 44 characters in body; edited title
Sep
11
comment “Bad” primitive root $\bmod p^{2}$
Thomas Andrews, KCd: Mea culpa. Yes I should have said "bad primitive root", and should have written "$m \bmod p$ is a primitive root".
Sep
11
comment “Bad” primitive root $\bmod p^{2}$
It's the terminology used in blms.oxfordjournals.org/content/6/1/42.full.pdf.
Sep
11
asked “Bad” primitive root $\bmod p^{2}$
Aug
9
comment Good books and lecture notes about category theory.
@JW: It's published. See maths.ed.ac.uk/~tl/bct. And it will be available free (online) in January, 2016.
Jul
14
awarded  Revival
Jul
2
awarded  Curious