User Dima Pasechnik

5 votes

2 answers

267 views

Computing the Abelian invariants of a subgroup of a f.g. Abelian group

asked Apr 5 at 9:18

1 vote

0 answers

145 views

Efficient decomposition algorithm for characters of symmetric groups

asked Mar 21 at 19:24

3 votes

0 answers

214 views

efficient numerical algorithm for matrix determinant

asked Mar 30, 2023 at 10:48

2 votes

2 answers

300 views

Factoring positive semidefinite matrices over $\mathbb{Q}[i]$

asked Feb 22, 2023 at 13:19

4 votes

1 answer

206 views

Epstein zeta function of Barnes-Wall and related lattices

asked Jan 24, 2023 at 13:56

5 votes

1 answer

245 views

Pythagorean numbers of real cyclotomic fields

asked Sep 19, 2022 at 8:37

4 votes

1 answer

296 views

Presentations for complex involutory reflection groups

asked Jan 14, 2012 at 12:04

1 vote

1 answer

111 views

showing a plane curve non-generic by exhibiting an even divisor

asked May 8, 2021 at 10:12

4 votes

1 answer

454 views

is every positive real cyclotomic number the norm of a cyclotomic?

asked Apr 26, 2021 at 17:12

3 votes

1 answer

51 views

describing embedding $U_3(q)<O_6^-(q)$, $q$ even

asked Apr 10, 2020 at 5:06

3 votes

0 answers

81 views

Signed triangulations of simplicial polyhedra

asked Nov 17, 2019 at 12:00

3 votes

0 answers

149 views

Fantappie transform(ation)s in Gelfand et al. "Generalized functions"

asked Oct 16, 2019 at 9:14

1 vote

3 answers

177 views

sequences of plane measures converging to a singular one: terminology, etc

asked Oct 3, 2012 at 2:05

3 votes

1 answer

193 views

representations with centralizer stable under conjugate transpose

asked Feb 21, 2019 at 8:01

4 votes

1 answer

149 views

complexity of bounded knapsack with spoilage

asked Jan 9, 2019 at 11:35

1 vote

1 answer

460 views

computing the boundary of a union of polytopes

asked Nov 2, 2018 at 22:46

8 votes

1 answer

387 views

projective plane cubics with exactly 9 real points

asked Jun 13, 2018 at 16:18

7 votes

1 answer

236 views

Do convex closed semialgebraic hyperplane cross-sections imply semi-algebraicity?

asked Nov 30, 2017 at 19:20

5 votes

1 answer

257 views

polynomial maps from reducible plane curves to conics

asked Sep 8, 2017 at 9:18

3 votes

1 answer

164 views

relations between 4 plane conics

asked Jul 25, 2017 at 11:16

2 votes

2 answers

438 views

inner product on matrix spaces of multivariate polynomials?

asked Jul 4, 2017 at 10:24

8 votes

1 answer

700 views

A direct proof of a property of symmetric 2x2-determinants

asked Jun 21, 2017 at 9:12

7 votes

1 answer

327 views

2x2-determinantal representations of cubic curves

asked Jun 21, 2017 at 14:39

5 votes

1 answer

266 views

speeding up Gosper and WZ algorithms

asked Jan 27, 2017 at 8:55

2 votes

1 answer

67 views

finding dominating cycles in $2K_2$-free graphs

asked Dec 17, 2014 at 16:14

13 votes

1 answer

716 views

a normal form for matrices over Z[x]/(x^2-1) ?

asked Oct 30, 2012 at 9:52

11 votes

5 answers

1k views

area of triangle from coefficients of its cubic?

asked Nov 23, 2011 at 7:34

3 votes

1 answer

127 views

embedding of $O_4^-(q)$ in $U_4(q)$

asked Jan 3, 2016 at 11:53

6 votes

1 answer

1k views

do you know this determinant (basic commutative algebra)?

asked Apr 11, 2012 at 17:15

1 vote

0 answers

77 views

notation for vector product in the space

asked Oct 13, 2015 at 18:04

Stack Exchange Network

45 Questions

Computing the Abelian invariants of a subgroup of a f.g. Abelian group

Efficient decomposition algorithm for characters of symmetric groups

efficient numerical algorithm for matrix determinant

Factoring positive semidefinite matrices over $\mathbb{Q}[i]$

Epstein zeta function of Barnes-Wall and related lattices

Pythagorean numbers of real cyclotomic fields

Presentations for complex involutory reflection groups

showing a plane curve non-generic by exhibiting an even divisor

is every positive real cyclotomic number the norm of a cyclotomic?

describing embedding $U_3(q)<O_6^-(q)$, $q$ even

Signed triangulations of simplicial polyhedra

Fantappie transform(ation)s in Gelfand et al. "Generalized functions"

sequences of plane measures converging to a singular one: terminology, etc

representations with centralizer stable under conjugate transpose

complexity of bounded knapsack with spoilage

computing the boundary of a union of polytopes

projective plane cubics with exactly 9 real points

Do convex closed semialgebraic hyperplane cross-sections imply semi-algebraicity?

polynomial maps from reducible plane curves to conics

relations between 4 plane conics

inner product on matrix spaces of multivariate polynomials?

A direct proof of a property of symmetric 2x2-determinants

2x2-determinantal representations of cubic curves

speeding up Gosper and WZ algorithms

finding dominating cycles in $2K_2$-free graphs

a normal form for matrices over Z[x]/(x^2-1) ?

area of triangle from coefficients of its cubic?

embedding of $O_4^-(q)$ in $U_4(q)$

do you know this determinant (basic commutative algebra)?

notation for vector product in the space