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Censi LI
  • Member for 6 years, 10 months
  • Last seen more than a month ago
  • Paris, France
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A mathematical learner.

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All Questions Answers
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8
Can every commutative ring of characteristic $p\in\mathbb P$ be written as the form $R/(p)$ with $R$ being a ring of characteristic $0$?
Jun 11 '15
7
On describing a sort of "well-behaved" subgroups of a free abelian group
Jun 17 '16
5
If $R$ is generated by idempotents, then $\text{Ann}(R)=0$?
Mar 30 '15
3
Does a binormal category always admit an additive structure?
Jun 17 '16
1
Structure of $\text{Aut}_R(R[X])$
Mar 31 '15
1
Suppose that $G$ is a subgroup of $GL_n(\mathbb C)$ with finite exponent. Then is $G$ a finite group? [closed]
Mar 14 '15
0
For which pairs of distinct positive primes $p$ and $q$, the integral closure of $\mathbb{Z}$ in $\mathbb{Q}[\sqrt{pq}]$ is a UFD?
Mar 13 '15
0
Do set-theorists use informal set theory as their meta-theory when talking about models of ZFC?
Jul 1 '17
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17
Can any commutative ring of characteristic $p\in\mathbb P$ be written as the form $R/(p)$ with $R$ being a ring of characteristic $0$?
16
Does the forgetful functor from $\mathbf{TopGrp}$ to $\mathbf{Top}$ admit a left adjoint?
16
A finite group which has a unique subgroup of order $d$ for each $d\mid n$.
10
Without using Heegner-Stark-Baker, $\mathbb{Q}(\sqrt{-11})$ has class number $1$.
9
What is the class of topological spaces $X$ such that the functors $\times X:\mathbf{Top}\to\mathbf{Top}$ have right adjoints?

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