MathOverflow

11

votes

6

answers

320

views

Computer package for representation theory of the symmetric group

7m ago Ira Gessel 1,380●4●11

0

votes

0

answers

10

views

Does equality of Hodge star and symplectic star imply Kähler structure?

sg.symplectic-geometry duality thermodynamic-formalism tensor-product

29m ago John Sidles 813●2●15

0

votes

1

answer

39

views

about the local ring of $\mathbb{Z}_p[T]/(pT^2+T+1)$ at the prime p

commutative-algebra

53m ago Will Sawin 3,345●7●16

0

votes

0

answers

41

views

Rabin’s Tree Theorem

lo.logic

1h ago Daniel Osterman 1

5

votes

5

answers

946

views

What is a complex inner product space “really”?

inner-product intuition

1h ago Phil Isett 763●2●9

3

votes

2

answers

137

views

Adjoint of a Connection Using the Hodge Map?

dg.differential-geometry hodge-theory laplacian riemmanian-geometry

1h ago Mihail Matrix 195●1●7

1

vote

0

answers

53

views

An algorithm for checking if a nonlinear function f is always positive

algorithms nonlinear-programming

1h ago Adel Ahmadyan 19●2

1

vote

2

answers

107

views

How to bound the sup norm of a Rademacher process or equivalently a Gaussian process?

stochastic-processes pr.probability

1h ago MathOverflow♦ 1●2●3

1

vote

0

answers

26

views

Tensors with low spectral norm

banach-spaces tensor-product operator-norms

2h ago Michal Kotowski 851●4●17

1

vote

1

answer

68

views

Min Bend Orthogonal Knots

discrete-geometry knot-theory stick-knots graph-theory reference-request

2h ago Ryan Budney 17.1k●1●32●81

7

votes

1

answer

101

views

Integer matrices with a strange divisibility property

algebra knottheory

2h ago David Speyer 47.1k●1●79●202

3

votes

2

answers

164

views

Modular representations with unequal characteristic - reference request

rt.representation-theory

3h ago Jim Humphreys 17.3k●23●63

26

votes

8

answers

787

views

How to quantify noncommutativity?

reference-request pr.probability free-probability noncommutative-algebra oa.operator-algebras

3h ago Suvrit 6,134●1●11●28

3

votes

3

answers

115

views

Functions holomorphic on a region minus a Cantor set

cv.complex-variables

3h ago Robert Israel 5,043●4●15

0

votes

1

answer

146

views

What is the difference between “up to conjugacy” and “up to conjugation” ? [closed]

terminology

3h ago Jake 61●2

0

votes

3

answers

218

views

The definition of the $K$-theory groups $K_{0}$ and $K_{1}$.

kt.k-theory-homology noncommutative-geometry

3h ago MTS 3,502●1●4●22

1

vote

2

answers

63

views

Integer square $2 \times 2$ block matrix inverse

ra.rings-and-algebras

3h ago psv 38●4

2

votes

1

answer

76

views

Genericity of sets without unique mean value

gr.group-theory pr.probability

3h ago MathOverflow♦ 1●2●3

4

votes

3

answers

432

views

What is the “Lefschetz Principle” (examples) ?

ag.algebraic-geometry at.algebraic-topology nt.number-theory

3h ago Felipe Voloch 13.6k●2●29●54

3

votes

3

answers

88

views

How to find the minimum number of hyperplanes to define a convex hull

geometry algebra

4h ago Igor Rivin 21.9k●3●25●49

2

votes

3

answers

139

views

Permutation characters and regular orbits

gr.group-theory

4h ago Alex Bartel 5,669●1●17●37

1

vote

1

answer

134

views

Correspondences on curves and their induced maps on differentials?

ag.algebraic-geometry jacobians algebraic-curves

4h ago Donu Arapura 9,800●1●19●43

3

votes

1

answer

95

views

Planar sets closed under intersection of circles

plane-geometry combinatorial-geometry incidence-geometry

4h ago Gjergji Zaimi 31.9k●2●59●127

1

vote

0

answers

27

views

Matrix Operations Preserving Hurwitz Stability

linear-algebra ds.dynamical-systems matrices graph-theory

4h ago Gilles Gnacadja 43●4

4

votes

1

answer

155

views

Is any Morse trajectory contained in a contractible open set?

morse-theory

4h ago MathOverflow♦ 1●2●3

0

votes

0

answers

52

views

L_2-norm representation

fa.functional-analysis normalization banach-spaces

4h ago Ulrich Pennig 2,055●6●12

5

votes

1

answer

95

views

Complexity of finding a 0-1 vector in a subspace or showing that there is none

linear-algebra graph-theory co.combinatorics

5h ago Brendan McKay 5,133●6●20

72

votes

53

answers

23k

views

Video lectures of mathematics courses available online for free

ho.history-overview mathematics-education soft-question big-list

5h ago Jakob Blaavand 1●2

13

votes

0

answers

198

views

Optimization problem arising from the study of zeta zeros

optimization riemann-zeta-function nt.number-theory special-functions

6h ago Micah Milinovich 2,766●1●8●21

4

votes

0

answers

84

views

Sum of exponential functions

ca.analysis-and-odes

6h ago John Engbers 41●1

10

votes

3

answers

342

views

Morse theory in TOP and PL categories?

morse-theory surfaces gt.geometric-topology

6h ago Sergey Melikhov 2,887●8●16

0

votes

0

answers

28

views

prolate spheroidal wave function

fa.functional-analysis banach-spaces

7h ago David 11●2

6

votes

3

answers

257

views

Subgroups of GL_2 over a finite field

gr.group-theory reference-request rt.representation-theory

7h ago Nick Gill 235●7

5

votes

2

answers

130

views

Triangularizing a matrix with function entries

linear-algebra matrix-analysis

7h ago Uday 777●3●13

0

votes

0

answers

18

views

Homography image registration with known gravity direction

ag.algebraic-geometry lie-groups global-optimization

7h ago Alex Flint 153●4

7

votes

1

answer

339

views

Orbifold fundamental group and configuration space

braid-groups configuration-space orbifolds gt.geometric-topology

7h ago Adrien 1,454●1●4●10

3

votes

1

answer

44

views

States/functionals on crossed product C*-algebras

fa.functional-analysis c-star-algebras crossed-products

7h ago Mrc Plm 4,424●5●17

-1

votes

1

answer

60

views

Simplifying Boolean Algebra [closed]

boolean-algebra

7h ago psv 38●4

0

votes

0

answers

62

views

About subspaces of $F$-spaces

gn.general-topology ac.commutative-algebra topology

7h ago AliReza Olfati 159●5

0

votes

0

answers

32

views

Expected value of a logarithm of a Levy process

pr.probability stochastic-processes stochastic-calculus

7h ago Grzenio 319●6

1

vote

0

answers

38

views

Diagonal and realization of Bisimplicial set are isomorphic

ct.category-theory

7h ago Ali Abdallah 11●1

7

votes

0

answers

143

views

Hilton-Eckmann dual of the Steenrod Algebra

at.algebraic-topology homotopy-theory

7h ago John Klein 5,349●11●18

4

votes

0

answers

124

views

Reference for: CM Hilbert Modular forms arise from Hecke characters

modular-forms galois-repesentations reference-request nt.number-theory

8h ago Rob Harron 2,885●1●7●15

9

votes

1

answer

147

views

How badly does compactness fail in $\mathcal{L}_{\omega_1\omega}$?

lo.logic model-theory set-theory descriptive-set-theory

8h ago Joel David Hamkins 58k●5●130●270

0

votes

1

answer

248

views

Prokhorov theorem

fa.functional-analysis pr.probability

8h ago MathOverflow♦ 1●2●3

1

vote

0

answers

33

views

Biharmonic function with a constant modulus

harmonic

9h ago David 11●2

14

votes

1

answer

322

views

Does smooth and proper over $\mathbb Z$ imply rational?

open-problem arithmetic-geometry ag.algebraic-geometry nt.number-theory

9h ago Dan Petersen 6,662●1●13●39

0

votes

2

answers

117

views

The number in the join of conjugate class and centralizer

gr.group-theory

9h ago Nick Gill 235●7

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