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Benjamin Steinberg's user avatar
Benjamin Steinberg's user avatar
Benjamin Steinberg
  • Member for 12 years, 10 months
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546 Answers

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3 votes

What is known about finite dimensional modules over the nilCoxeter algebra?

8 votes
Accepted

Quiver and relations for a monoid related to Catalan numbers

6 votes

$G$-module structure of the relation module for a presentation of a finite group $G$

3 votes
Accepted

Every homomorphism between (rational) Puiseux monoids is multiplication by a non-negative rational

3 votes
Accepted

Minimal ideals and subalgebras of semisimple algebras

7 votes
Accepted

Number of $k$-tuples of elements generating a cyclic group

6 votes
Accepted

Explicit formula for general group extension in terms of cartesian product set

3 votes
Accepted

How is the classification of groups extensions by $H^2$ related to Yoneda Ext?

3 votes
Accepted

Congruences that aren't "finite from above," take 2: semigroups

5 votes

Congruences that aren't "finite from above"

8 votes
Accepted

Kaplansky inverse element theorem on group C-star algebra

2 votes

Stone-topological/profinite equivalence for quandles

2 votes

Spectrum of the adjacency matrix of certain directed graphs

10 votes
Accepted

An algebra with more than one Frobenius algebra structure

11 votes

Are all free monoids residually finite?

1 vote
Accepted

Semigroup algebras with one dimensional center

1 vote
Accepted

Cycles in almost breakable semigroups

10 votes
Accepted

Tensor product of irreducible representations of an algebra

5 votes

An application of ping-pong lemma

6 votes
Accepted

Non-diagonalizability of the adjacency matrix of a directed graph

10 votes
Accepted

Do rational group algebras have an outer automorphism?

6 votes
Accepted

When is semigroup algebra local?

5 votes

Cartan matrix of the full transformation monoid ring

7 votes
Accepted

Algebra generated by transformation matrices

1 vote

Hopf algebra of representative k-valued functions of an abstract group

4 votes
Accepted

Cancelable commutative monoids with finite maximal subgroups

7 votes
Accepted

Is the free profinite group (or pro-$p$) torsion-free?

1 vote
Accepted

Geometric vs cohomological dimension with families - on a proof of Lueck and Meintrup

2 votes

Classification of simple modules for the free algebra

6 votes
Accepted

Presentationally finite group "extensions"

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