User Russ Woodroofe

17 votes

Testing simplicial complexes for shellability

answered Apr 24, 2013 at 1:00

17 votes

Accepted

Motivation for Frankl's conjecture?

answered May 22, 2013 at 16:12

15 votes

Accepted

Another colored balls puzzle

answered May 13, 2013 at 21:11

14 votes

A group-theoretic perspective on Frankl's union closed problem

answered Jan 9, 2014 at 20:39

12 votes

Product of Frattini Groups

answered Oct 20, 2017 at 21:40

10 votes

What is the Möbius function for the lattice of partial partitions?

answered May 26, 2023 at 18:19

10 votes

matroids axioms and independence system

answered Mar 12, 2014 at 1:20

9 votes

Accepted

Riemann Hypothesis, Primes and Groups

answered May 23, 2019 at 14:17

9 votes

Time-saving (technology) tricks for writing papers

answered Jul 15, 2020 at 8:46

8 votes

Making spheres shellable

answered Feb 5, 2015 at 19:19

7 votes

Computer-aided homology computations

answered Sep 12, 2012 at 16:31

7 votes

Does homotopy equivalence to a wedge of spheres imply shellability?

answered Nov 30, 2020 at 11:58

7 votes

Homotopy type of non-Cohen-Macaulay complexes

answered Jul 3, 2019 at 4:58

6 votes

Does the hypergraph of subgroups determine a group?

answered Oct 7, 2018 at 1:20

6 votes

Accepted

Shellable simplicial complex with restriction on shellings

answered Dec 3, 2018 at 13:45

6 votes

Accepted

Factor subsets of a finite group

answered Jan 29, 2014 at 23:34

6 votes

Accepted

Is there an analog of Sperner's lemma for the Hopf invariant?

answered Feb 1, 2014 at 22:29

6 votes

Does every simplicial polytope have a topology-preserving contractible edge?

answered May 5, 2013 at 21:36

6 votes

Missing citations of "to appear" papers on MathSciNet

answered Apr 6, 2016 at 16:14

6 votes

Important formulas in combinatorics

answered Jun 27, 2016 at 10:54

5 votes

Generating finite simple groups with $2$ elements

answered Apr 1, 2016 at 17:00

5 votes

Generating random finite groups

answered Jul 13, 2015 at 12:32

5 votes

Characterising extendable automorphisms

answered May 31, 2014 at 15:11

5 votes

Accepted

Flag complexes that are shellable but not vertex decomposable

answered Oct 5, 2014 at 21:34

5 votes

Examples of interesting false proofs

answered Mar 19, 2013 at 19:38

5 votes

maximal subgroups of finite simple groups

answered Nov 17, 2012 at 19:49

5 votes

Is the topological concept of collapsible useful?

answered Jan 23, 2013 at 21:51

5 votes

Accepted

Reference request on Leray numbers

answered Dec 4, 2011 at 21:09

5 votes

Is an Eulerian lattice shellable?

answered Mar 16, 2018 at 19:07

5 votes

Accepted

How does the high-dimensional combinatorial Laplacian work?

answered Sep 3, 2018 at 13:10

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63 Answers

Testing simplicial complexes for shellability

Motivation for Frankl's conjecture?

Another colored balls puzzle

A group-theoretic perspective on Frankl's union closed problem

Product of Frattini Groups

What is the Möbius function for the lattice of partial partitions?

matroids axioms and independence system

Riemann Hypothesis, Primes and Groups

Time-saving (technology) tricks for writing papers

Making spheres shellable

Computer-aided homology computations

Does homotopy equivalence to a wedge of spheres imply shellability?

Homotopy type of non-Cohen-Macaulay complexes

Does the hypergraph of subgroups determine a group?

Shellable simplicial complex with restriction on shellings

Factor subsets of a finite group

Is there an analog of Sperner's lemma for the Hopf invariant?

Does every simplicial polytope have a topology-preserving contractible edge?

Missing citations of "to appear" papers on MathSciNet

Important formulas in combinatorics

Generating finite simple groups with $2$ elements

Generating random finite groups

Characterising extendable automorphisms

Flag complexes that are shellable but not vertex decomposable

Examples of interesting false proofs

maximal subgroups of finite simple groups

Is the topological concept of collapsible useful?

Reference request on Leray numbers

Is an Eulerian lattice shellable?

How does the high-dimensional combinatorial Laplacian work?