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Luc Guyot's user avatar
Luc Guyot
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answer
23
Average measure of intersection of a convex region with its translate
Oct 7, 2017
question
20
Does the ring $R = \mathbb{Z}[X^{\pm1}]$ of Laurent polynomials over $\mathbb{Z}$ satisfy $SL_2(R) = E_2(R)$?
May 30, 2016
answer
20
Deciding if $\mathbb{Z}\ltimes_A \mathbb{Z}^5$ and $\mathbb{Z}\ltimes_B \mathbb{Z}^5$ are isomorphic or not
Aug 15, 2020
answer
19
When is $A\otimes R$ a free $R$-module?
Nov 22, 2017
answer
18
Has the Jacobson/ Baer radical of a group been studied?
Jan 13, 2017
answer
15
Finite non-commutative ring with few invertible (unit) elements
Oct 29, 2017
answer
13
a normal form for matrices over Z[x]/(x^2-1) ?
Jun 10, 2016
answer
13
Solvable groups that are linear over $\mathbb{C}$ but not over $\mathbb{Q}$?
Nov 16, 2023
answer
13
What is known about ideal and divisibility lattices of GCD domains and their generalizations?
Oct 30, 2017
answer
13
Can one prove the elementary divisor theorem for PIDs by elementary matrix operations?
Jul 23, 2017