Benjamin Steinberg's user avatar
Benjamin Steinberg's user avatar
Benjamin Steinberg's user avatar
Benjamin Steinberg
  • Member for 12 years, 9 months
  • Last seen this week
1 vote
0 answers
89 views

Computing the induced homomorphisms of derived functors using acyclic resolutions

5 votes
0 answers
98 views

Modern proof of a theorem of Dickson on finite representation type

4 votes
2 answers
362 views

Splitting field for $\mathrm{GL}(2,p)$ - reference request

4 votes
1 answer
201 views

Representation of $\mathrm{AGL}(V)$ on the homology of the poset of affine subspaces of $V$

3 votes
0 answers
82 views

Terminology question

2 votes
1 answer
176 views

Seeking combinatorial interpretation of a quantity that comes up from central hyperplane arrangements

2 votes
1 answer
291 views

English translation of Emmy Noether's Hyperkomplexe Grössen und Darstellungstheorie

7 votes
1 answer
379 views

A set theoretic question arising from trying to understand a sheaf cohomology question

7 votes
1 answer
212 views

Looking for citable reference for a well-known fact about tensor product of finite dimensional algebras over an algebraically closed field

1 vote
0 answers
35 views

Name for vertex of a digraph reachable from a directed cycle

12 votes
0 answers
311 views

Combinatorial proof of invertibility of a symmetric matrix associated to the ring of matrices over a finite field

3 votes
0 answers
85 views

Splitting the canonical projection to the free pro-p group

7 votes
1 answer
203 views

Injective indecomposable modules over Laurent polynomial rings

37 votes
0 answers
1k views

Groups whose complex irreducible representations are finite dimensional

14 votes
1 answer
558 views

Group rings such that every (countably generated) module has a maximal submodule

10 votes
1 answer
262 views

A flatness result of Fiedorwicz for amalgamated free products of monoids in connection with classifying spaces of monoids

6 votes
1 answer
253 views

Families of subsets whose characteristic vectors are spanning sets

5 votes
1 answer
1k views

A strange two-variable recursion

7 votes
0 answers
144 views

Flatness for pushouts/amalgamations of rings

5 votes
1 answer
336 views

Can the trivial module be stably free for a monoid ring?

9 votes
3 answers
372 views

Is there a standard name for the following type of linear operator?

5 votes
2 answers
386 views

Lefschetz Principle for semisimplicity

6 votes
2 answers
352 views

Is this algebra isomorphic to an incidence algebra?

2 votes
1 answer
248 views

A question of terminology regarding integer partitions

7 votes
0 answers
244 views

On a permutation module for GL(n,q)

2 votes
0 answers
86 views

What is the name for the subring of the Grothendieck ring of a bialgebra spanned by one-dimensional representations?

16 votes
2 answers
792 views

Decomposing $(\mathbb C^n)^{\otimes m}$ as a representation of $S_n\times S_m$

5 votes
1 answer
257 views

Is there a standard name for this poset

7 votes
1 answer
585 views

What version of the wreath product embedding theorem is actually stated in the famous paper of Kaloujnine and Krasner?

4 votes
2 answers
389 views

Is there a purely module theoretic characterization of semiprimitive rings?