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seen Apr 11 at 17:22

Mar
29
comment Extensions of Abelian groups to non-Abelian groups
Sorry I have a very basic knowledge in this area. I came across the cohomology and its relation to group extensions but I am looking for something more basic that I could understand. Long time ago, I remember I had seen somewhere that extensions are characterized by two mappings satisfying some conditions. Would you happen to know of a result like that?
Mar
29
asked Extensions of Abelian groups to non-Abelian groups
Jan
17
asked Subgroups of $\mathbb{D}_6^n$
Jan
9
comment Large Deviations Result for non iid variables/ Conditional Large Deviations?
Thanks for your help again!
Jan
9
accepted Large Deviations Result for non iid variables/ Conditional Large Deviations?
Jan
9
asked Large Deviations Result for non iid variables/ Conditional Large Deviations?
Jan
7
accepted Extensions of homomorphisms
Jan
7
comment Law of Large Numbers for “Approximately” iid samples
Thanks for the very intelligent answer. It's interesting that the lower bound is not used in the proof. For the record, I think in your notation $n^{-1}K^n$ means $\frac{1}{n}\left(K_1+K_2+\cdots+K_n\right)$.
Jan
7
awarded  Scholar
Jan
7
awarded  Supporter
Jan
7
accepted Law of Large Numbers for “Approximately” iid samples
Jan
7
awarded  Editor
Jan
7
revised Law of Large Numbers for “Approximately” iid samples
edited tags
Jan
7
asked Law of Large Numbers for “Approximately” iid samples
Dec
4
comment Extensions of homomorphisms
Thanks, your comment was helpful.
Dec
4
comment Extensions of homomorphisms
That's a very easy example, thanks!
Dec
4
comment Subgroups of $G^n$
Thanks Gerry, that's a very interesting post.
Dec
4
comment Subgroups of $G^n$
I'm interested in counting them. My motivation is coding theory in which a subgroup of $G^n$ is regarded as a code. The idea is to find a "big" collection of subgroups of $G^n$ and somehow analyze the average "coding performance" of the collection.
Dec
4
asked Extensions of homomorphisms
Dec
4
awarded  Student