Markus Schweighofer

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Name	Markus Schweighofer
Member for	1 year
Seen	Jan 7 at 17:05
Website	math.uni-konstanz.de/~schweigh
Location	Konstanz, Germany
Age	38

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16

30

votes

4

answers

2k

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The maximum of a polynomial on the unit circle

cv.complex-variables polynomials geometry open-problem

aug 4 at 17:13 Alexandre Eremenko 10.6k●1●24●39

12

26

votes

5

answers

2k

views

How to recognise that the polynomial method might work

co.combinatorics

oct 26 10 at 6:17 domotorp 4,068●7●25

10

18

votes

3

answers

2k

views

Splitting the determinant polynomial into linear factors - a Dedekind problem

linear-algebra determinants rt.representation-theory group-algebras

nov 10 10 at 10:22 Denis Serre 18.7k●1●31●93

2

15

votes

4

answers

677

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Proving univariate polynomials (defined by sums, binomial coeffs, etc.) are nonnegative: is it ‘routine’?

inequalities co.combinatorics decidability lo.logic algorithms

aug 11 at 3:19 fedja 19.4k●2●46●94

10

13

votes

0

answers

251

views

Cauchy matrices with elementary symmetric polynomials

matrices rt.representation-theory linear-algebra co.combinatorics

nov 23 at 2:13 S. Sra 10k●1●16●44

3

11

votes

2

answers

405

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Quadratic Farkas' Lemma?

nonlinear-optimization linear-algebra inequalities reference-request

nov 6 at 22:42 Markus Schweighofer 486●2●6

2

11

votes

0

answers

205

views

Descartes rule of signs for a noncommutative polynomial in matrix variables

matrices na.numerical-analysis polynomials

aug 14 at 15:19 S. Sra 10k●1●16●44

7

10

votes

3

answers

796

views

Counting roots: multidimensional Sturm’s theorem

real-algebraic-geometry na.numerical-analysis polynomials

oct 24 at 8:15 Markus Schweighofer 486●2●6

1

10

votes

6

answers

588

views

Computing signature

linear-algebra gt.geometric-topology

sep 20 at 16:44 Agol 23.9k●1●33●84

4

8

votes

3

answers

268

views

Relating a Polynomial equation to the characteristic equation of a Hermitian matrix

linear-algebra matrices polynomials fa.functional-analysis

nov 24 at 11:56 Markus Schweighofer 486●2●6

4

8

votes

3

answers

510

views

Is the tensor product of polyhedra a polyhedron?

polyhedra linear-programming linear-optimization tensor-products

dec 20 at 18:29 Will Sawin 18.5k●1●24●48

2

7

votes

2

answers

310

views

On the Positive Definiteness of a Linear Combination of Matrices

matrices matrix-analysis linear-algebra quadratic-forms ag.algebraic-geometry

jan 7 at 9:43 Dima Pasechnik 3,080●3●14

2

5

votes

1

answer

171

views

A conjecturally easier version of matrix Descartes rule of signs.

linear-algebra

aug 14 at 14:44 Igor Rivin 31.1k●3●37●71

1

4

votes

1

answer

136

views

Finding the spectrum of the composition of a projection with a multiplication operator

fa.functional-analysis sp.spectral-theory

nov 1 at 22:44 Christopher A. Wong 358●1●9

1

3

votes

3

answers

365

views

Origin of the theorem on the existence of the smallest field of definition of an affine variety

ag.algebraic-geometry reference-request ho.history-overview

oct 29 at 4:36 xbnv 385●6