User LeechLattice

6

16

votes

1

answer

361

views

Compact manifold $X$ having fixed-point property but $X\times X$ does not

at.algebraic-topology gn.general-topology

Dec 5 '19 at 18:53 R. van Dobben de Bruyn 18.8k

6

15

votes

1

answer

316

views

Geometric interpretation of the exceptional isomorphism $PSp(4,3)=PSU(4,2^2)$

co.combinatorics gr.group-theory finite-groups finite-geometry incidence-geometry

Dec 11 '19 at 10:15 Nick Gill 10.8k

3

13

votes

1

answer

428

views

Dimensional gap of group representations

gr.group-theory rt.representation-theory

Oct 7 '19 at 14:35 Derek Holt 33k

3

12

votes

2

answers

492

views

Conceptual explanations of the class numbers for the first few $\mathbb{Q}(\sqrt{p})$ with odd conductor

nt.number-theory algebraic-number-theory elliptic-curves abelian-varieties class-field-theory

May 29 '20 at 16:44 GH from MO 80.6k

3

10

votes

1

answer

227

views

Girth and diameter of a graph with minimum degree at least 3

co.combinatorics graph-theory

Oct 26 at 19:30 Robin Saunders 3,087

1

10

votes

1

answer

177

views

Does every $C_4$-free bipartite graph lies in some finite projective plane?

reference-request co.combinatorics graph-theory finite-geometry

Dec 31 '19 at 6:09 Gjergji Zaimi 81.1k

3

10

votes

0

answers

370

views

Probability of Words Summing to $1$ in $S_n$ or $PGL_2(n)$

co.combinatorics gr.group-theory symmetric-groups characters

Jun 14 '19 at 5:06 LeechLattice 6,376

1

9

votes

1

answer

201

views

Are the class numbers of $\mathbb{Q}(\cos(2\pi / m))$ $O(m^n)$ for some fixed $n$?

nt.number-theory analytic-number-theory algebraic-number-theory geometry-of-numbers cyclotomic-fields

Jan 20 at 8:10 LeechLattice 6,376

2

9

votes

1

answer

371

views

Are bipartite Moore graphs Hamiltonian?

reference-request co.combinatorics graph-theory finite-geometry hamiltonian-graphs

Sep 23 '18 at 6:52 CommunityBot 1

8

votes

0

answers

154

views

Unexpected patterns on the graph of an L-function on the critical line

analytic-number-theory modular-forms l-functions

May 26 at 13:05 LeechLattice 6,376

8

votes

2

answers

260

views

Do odd-weight cusp forms have analytic rank 0?

modular-forms l-functions

Feb 15 at 16:54 user174244 21

3

7

votes

0

answers

107

views

Roots of a family of polynomials forming shapes

cv.complex-variables polynomials statistical-physics ising-model

Nov 5 at 12:22 LeechLattice 6,376

2

7

votes

1

answer

116

views

Independence number of $4$-uniform regular hypergraph

co.combinatorics hypergraph

Jun 23 '19 at 13:38 Fedor Petrov 83.2k

6

votes

2

answers

632

views

Could the Weil zeroes of curves be evenly distributed?

ag.algebraic-geometry arithmetic-geometry algebraic-curves weil-conjectures

Oct 13 at 1:13 Will Sawin 105k

4

6

votes

1

answer

146

views

Restricted independent set of the cycle graph $C_{3n}$

co.combinatorics pr.probability graph-theory

May 14 '19 at 19:56 Seva 20.9k

5

votes

1

answer

196

views

Computing the invariants of ball quotient surfaces

ag.algebraic-geometry complex-geometry singularity-theory kahler-manifolds resolution-of-singularities

May 3 at 15:44 Toffee 591

1

5

votes

2

answers

333

views

Local phase statistics of the nontrivial Riemann zeros

nt.number-theory cv.complex-variables analytic-number-theory riemann-zeta-function

Jul 18 '20 at 21:36 Stopple 8,603

1

4

votes

1

answer

119

views

Is there a unique Baer subplane in a finite Desarguesian projective plane?

co.combinatorics gr.group-theory finite-geometry

May 9 '19 at 5:58 LeechLattice 6,376

3

votes

2

answers

213

views

Distribution of zeros of real quadratic Dirichlet L-functions in small intervals

nt.number-theory analytic-number-theory l-functions

Mar 1 at 20:51 2734364041 2,589

1

3

votes

0

answers

183

views

Is there a compact complex surface $X$ with $c_2(X)=7+6n$ and $c_1^2(X)=17+18n$?

ag.algebraic-geometry dg.differential-geometry complex-geometry kahler-manifolds complex-manifolds

Nov 16 '20 at 17:42 LeechLattice 6,376

1

3

votes

1

answer

110

views

Deciding isometry of unimodular lattices by Gram matrices

reference-request gr.group-theory matrices cohomology lattices

Oct 21 '20 at 23:12 Will Jagy 24.1k

3

votes

1

answer

107

views

Independence number of $C_4$-free graphs

co.combinatorics graph-theory ramsey-theory extremal-graph-theory

Sep 8 '20 at 16:08 Fedor Petrov 83.2k

2

3

votes

1

answer

93

views

Expected size of matchings in a cubic graph

co.combinatorics pr.probability graph-theory random-graphs statistical-physics

Mar 15 '19 at 7:23 Brendan McKay 33k

1

3

votes

0

answers

78

views

Reference request: Bipartite symmetric graphs are hamiltonian

reference-request graph-theory hamiltonian-graphs

Jul 15 '18 at 7:23 LeechLattice 6,376

2

votes

0

answers

64

views

The Guinand-Weil explicit formula for Hecke characters

reference-request analytic-number-theory algebraic-number-theory l-functions zeta-functions

Jan 10 at 4:26 LeechLattice 6,376

2

votes

1

answer

191

views

Filling $1..mn$ into a $m×n$ rectangle such that every number $<mn$ is dominated

reference-request co.combinatorics enumerative-combinatorics

Jun 29 '19 at 13:55 CommunityBot 1

2

votes

0

answers

72

views

Confirming existence in polynomial time while solution finding is NP-complete

co.combinatorics computational-complexity

Jan 26 '19 at 17:28 LeechLattice 6,376

1

2

votes

1

answer

120

views

Distinguishing points by sets of given size

reference-request co.combinatorics extremal-combinatorics combinatorial-designs

Aug 3 '18 at 10:36 CommunityBot 1

1

vote

0

answers

106

views

Regulator of number fields of a special form

nt.number-theory algebraic-number-theory cyclotomic-fields

Apr 23 '20 at 6:07 LeechLattice 6,376

1

vote

0

answers

103

views

Looking for the multiplicity-free paper by N.Inglis

reference-request gr.group-theory paper-request

Jan 6 '20 at 14:50 Martin Sleziak 4,382

Stack Exchange Network

current community

your communities

more stack exchange communities

Next privilege

Next badge

30 Questions

Compact manifold $X$ having fixed-point property but $X\times X$ does not

Geometric interpretation of the exceptional isomorphism $PSp(4,3)=PSU(4,2^2)$

Dimensional gap of group representations

Conceptual explanations of the class numbers for the first few $\mathbb{Q}(\sqrt{p})$ with odd conductor

Girth and diameter of a graph with minimum degree at least 3

Does every $C_4$-free bipartite graph lies in some finite projective plane?

Probability of Words Summing to $1$ in $S_n$ or $PGL_2(n)$

Are the class numbers of $\mathbb{Q}(\cos(2\pi / m))$ $O(m^n)$ for some fixed $n$?

Are bipartite Moore graphs Hamiltonian?

Unexpected patterns on the graph of an L-function on the critical line

Do odd-weight cusp forms have analytic rank 0?

Roots of a family of polynomials forming shapes

Independence number of $4$-uniform regular hypergraph

Could the Weil zeroes of curves be evenly distributed?

Restricted independent set of the cycle graph $C_{3n}$

Computing the invariants of ball quotient surfaces

Local phase statistics of the nontrivial Riemann zeros

Is there a unique Baer subplane in a finite Desarguesian projective plane?

Distribution of zeros of real quadratic Dirichlet L-functions in small intervals

Is there a compact complex surface $X$ with $c_2(X)=7+6n$ and $c_1^2(X)=17+18n$?

Deciding isometry of unimodular lattices by Gram matrices

Independence number of $C_4$-free graphs

Expected size of matchings in a cubic graph

Reference request: Bipartite symmetric graphs are hamiltonian

The Guinand-Weil explicit formula for Hecke characters

Filling $1..mn$ into a $m×n$ rectangle such that every number $<mn$ is dominated

Confirming existence in polynomial time while solution finding is NP-complete

Distinguishing points by sets of given size

Regulator of number fields of a special form

Looking for the multiplicity-free paper by N.Inglis