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Keith Kearnes's user avatar
Keith Kearnes's user avatar
Keith Kearnes's user avatar
Keith Kearnes
  • Member for 8 years, 7 months
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I am a member of the math department at the University of Colorado at Boulder.

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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?
Sep 8, 2016
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15
Is every Boolean algebra a subalgebra of a free one?
Jul 24
answer
14
When do $P$ $\subseteq$ $N$ $\subseteq$ $M$ and $P \cong M$ imply $N \cong M$?
Jun 30, 2017
answer
13
Characteristic subgroups and automorphisms
Oct 13, 2015
answer
12
Name of algebraic structure (group-like)
Jul 25, 2022
answer
12
$f(x) $ be the minimal polynomial of $a$ (algebraic element) over $\mathbb Q$ , let $b=f'(a) \in \mathbb Q(a)$ , then is $\mathbb Q(a)=\mathbb Q(b)$?
Aug 31, 2016
answer
11
What is the minimum number of axioms necessary to define a (not necessarily commutative) ring (that doesn't have to have a one)?
Dec 31, 2023
answer
10
Can a single nontrivial identity imply associativity and commutativity?
Jun 17, 2020
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10
Free lattice in three generators
Oct 8, 2018
answer
9
Generalization of normal subgroups and ideals
May 3, 2017
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32
A group allowing exactly 7 group topologies
30
Non isomorphic finite rings with isomorphic additive and multiplicative structure
22
Varieties where every algebra is free
20
Is every complete Boolean algebra isomorphic to the quotient of a powerset algebra?
20
Does the hypergraph of subgroups determine a group?