Mathematics
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Jxt921
  • Member for 7 years, 2 months
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All Questions Answers
Score Newest
question
12
$\ker \phi = (x_1-a_1, ..., x_n-a_n)$ for a ring homomorphism $\phi: R[x_1, ..., x_n] \to R$
Jul 10, 2016
question
11
Understanding divison by monic polynomial in $R[x]$ where $R$ is an arbitrary ring
Jun 3, 2016
question
11
Every subgroup of a quotient group is a quotient group itself
Jan 10, 2016
question
9
$gh = hg, \ \gcd(|g|, |h|) = 1\Rightarrow|gh| = |g||h|\ \ (|a|$ = order of element $a)$
Jun 22, 2016
question
8
Monoidal categories: coherence from strictness
Dec 17, 2019
question
6
Proving Laplace expansion using exterior algebra
Oct 6, 2019
question
6
Pushout in the category of Sets: proof
Dec 1, 2018
question
6
Weibel: spectral sequence of a filtration
May 21, 2020
question
5
The center of $A_n$ is trivial for $n \geq 4$
Aug 1, 2016
question
5
Defining a coproduct in $\mathsf{Grp}$ using group presentations
Jul 25, 2015
Top network posts
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51
How should a "working mathematician" think about sets? (ZFC, category theory, urelements)
18
Large categories vs. $\mathrm{U}$-categories: why is the loss of category-theoretic information inessential?
12
Translating Grothendieck axiom UB into ZFC
11
What is the use of Grothendieck universes in category theory?
10
How do top graduate programs in mathematics verify the validity of an enrollee's undergraduate degree from abroad? E.g. IUM in Russia

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