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Greg Muller's user avatar
Greg Muller's user avatar
Greg Muller's user avatar
Greg Muller
  • Member for 15 years, 2 months
174 votes
7 answers
17k views

Does $\DeclareMathOperator\Aut{Aut}\Aut(\Aut(\dots\Aut(G)\dots))$ stabilize?

110 votes
11 answers
13k views

Why do Groups and Abelian Groups feel so different?

61 votes
7 answers
5k views

What are surprising examples of Model Categories?

38 votes
6 answers
4k views

Why Drinfel'd-Jimbo-type quantum groups?

32 votes
3 answers
5k views

Krull dimension less or equal than transcendence degree?

26 votes
1 answer
998 views

Idempotents in Rings of Differential Operators

24 votes
2 answers
1k views

Finding citations for 'well-known' results

24 votes
3 answers
3k views

The closure-complement-intersection problem

23 votes
5 answers
10k views

Maps to projective space determined by a line bundle

22 votes
8 answers
11k views

Beginning a sentence with a mathematical symbol

22 votes
2 answers
2k views

Are there moves between Reidemeister moves?

18 votes
1 answer
1k views

What rings/groups have interesting quaternionic representations?

17 votes
3 answers
1k views

Freyd-Mitchell for triangulated categories?

16 votes
1 answer
947 views

Coxeter Arrangements and an Identity

14 votes
5 answers
2k views

What is $\sum (x+\mathbb{Z})^{-2}$?

12 votes
1 answer
2k views

Can the Quantum Torus be realized as a Hall Algebra?

12 votes
1 answer
645 views

Does the image of a differential operator always contain an ideal?

11 votes
1 answer
840 views

Which cluster algebras are coordinate rings of double Bruhat cells?

11 votes
1 answer
1k views

How nice are representation varieties of Fuchsian groups?

11 votes
6 answers
844 views

Is the area of a polygonal linkage maximized by having all vertices on a circle?

11 votes
1 answer
510 views

When is the module of Kahler volume forms torsion-free?

10 votes
1 answer
826 views

Subcategories which still give a Yoneda embedding

10 votes
3 answers
864 views

Is the 'massive' Calogero-Moser system still integrable?

10 votes
1 answer
607 views

Are cluster variables prime elements?

9 votes
1 answer
266 views

Branch cuts of $GL_n^+(\mathbb{R})$

8 votes
2 answers
378 views

Relation between Lie Algebra Cohomology and Number of Relations of a Cyclic Module?

7 votes
1 answer
567 views

Depth Zero Ideals in the Homogenized Weyl Algebra

7 votes
0 answers
302 views

Directed arcs on a surface

7 votes
1 answer
484 views

Are Kahler differentials the same on the affine closure on a quasi-affine scheme?

7 votes
0 answers
208 views

What subspaces of n-tuples of rational functions can be the solution space to a system of differential equations?