Greg Kuperberg's user avatar
Greg Kuperberg's user avatar
Greg Kuperberg's user avatar
Greg Kuperberg
  • Member for 14 years, 5 months
  • Last seen this week
6 votes

Why these particular numerical factors in the definition of Gaussian curvature?

19 votes
Accepted

Binomial supercongruences: is there any reason for them?

2 votes

Various Cartan's Lemmata

19 votes
Accepted

Database of Steiner triple systems

29 votes
Accepted

Finitely presented sub-groups of $\operatorname{GL}(n,C)$

134 votes
Accepted

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

20 votes
Accepted

What is the best homology/cohomology theory for the Lefschetz fixed point theorem?

7 votes

Rhombus tilings with more than three directions

28 votes

Combinatorial results without known combinatorial proofs

14 votes
Accepted

Closest point on Bézier spline

15 votes
Accepted

Is Top_4 (normal spaces) a reflective subcategory of Top_3 (regular spaces)?

8 votes
Accepted

Hilbert spaces are induced by a bilinear form. How about n-linear forms?

3 votes

What is a projective space?

3 votes

Why is complex projective space triangulable?

3 votes
Accepted

Is there a good differential calculus for quantum SU(3)?

12 votes

Statistics of irreps of S_n that can be read off the Young diagram, and consequences of Kerov–Vershik

7 votes

Hopf algebras arising as Group Algebras

25 votes

How to escape the inclination to be a universalist or: How to learn to stop worrying and do some research.

4 votes

Knots that unknot in a manifold

6 votes

Exact sequences of permutational representations?

14 votes
Accepted

Generalizations of the Birkhoff-von Neumann Theorem

4 votes

minimum number of subsets?

24 votes

Are there any very hard unknots?

13 votes

Polar body of a convex body that avoids a lattice

26 votes
Accepted

What does "linearly disjoint" mean for abstract field extensions?

4 votes
Accepted

Is there a good version of Artin-Wedderburn for semisimple algebra objects?

6 votes
Accepted

Casson's invariant and the trivial connection contribution to witten's 3-manifold invariant

9 votes
Accepted

Normal coordinates for a manifold with volume form

26 votes

Why does non-abelian group cohomology exist?

26 votes

What exactly is the relationship between codes over finite fields and Euclidean sphere-packings?

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