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Keith Kearnes's user avatar
Keith Kearnes's user avatar
Keith Kearnes's user avatar
Keith Kearnes
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I am a member of the math department at the University of Colorado at Boulder.

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31
A group allowing exactly 7 group topologies
Aug 15, 2015
30
Non isomorphic finite rings with isomorphic additive and multiplicative structure
Aug 22, 2015
22
Varieties where every algebra is free
Jul 7, 2015
20
Is every complete Boolean algebra isomorphic to the quotient of a powerset algebra?
Jul 22, 2018
20
Does the hypergraph of subgroups determine a group?
Oct 6, 2018
19
What are applications of commutativity theorems for rings?
Sep 2, 2015
17
Is the Cartesian product of two finitely presented objects finitely presentable?
May 28, 2023
17
Are arbitrary nonempty intersections of principal filters principal?
Sep 1, 2022
16
Do commutative rings without unity have the IBN property?
Oct 17, 2018
16
Are Gray codes in $\{0,1\}^n$ isomorphic?
Oct 18, 2018
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17
Does there exist a pair of infinite fields, the additive group of one isomorphic to the multiplicative group of the other?
14
When do $P$ $\subseteq$ $N$ $\subseteq$ $M$ and $P \cong M$ imply $N \cong M$?
13
Characteristic subgroups and automorphisms
12
$f(x) $ be the minimal polynomial of $a$ (algebraic element) over $\mathbb Q$ , let $b=f'(a) \in \mathbb Q(a)$ , then is $\mathbb Q(a)=\mathbb Q(b)$?
12
Name of algebraic structure (group-like)