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Mathematics
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user861776
  • Member for 3 years, 9 months
  • Last seen more than 3 years ago
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question
6
Artin exercise 2.5.4: Let $f:\Bbb R^+\to\Bbb C^\times$ be the map $f(x)=e^{ix}$. Prove that $f$ is a homomorphism, and determine its kernel and image.
Apr 9, 2021
question
5
Proving a function is an automorphism, but not an inner automorphism
Mar 25, 2021
question
5
Understanding short exact sequences
Apr 11, 2021
answer
4
Does this proof make sense? $m \mid n$ if and only if $m \mid n^2$
Apr 13, 2021
question
4
Aluffi exercise 1.6
Apr 13, 2021
question
4
finding groups $G$ such that $G \simeq \operatorname{Aut}(G)$
Mar 10, 2021
question
4
Proof that $S_3 \simeq{\rm Aut}(S_3)$
Mar 10, 2021
question
4
Finding all groups with no proper subgroups
Apr 7, 2021
question
4
Proving Proposition 2.4.3. in Artin
Apr 7, 2021
question
4
Understanding mathematical terminology in Aluffi
Apr 9, 2021