Dima Pasechnik's user avatar
Dima Pasechnik's user avatar
Dima Pasechnik's user avatar
Dima Pasechnik
  • Member for 13 years, 4 months
  • Last seen this week
1 vote
Accepted

Complexity of quadratic polynomials isomorphism

1 vote
Accepted

the line graph of bipartite 2k2-free graph

0 votes
Accepted

minimize number of unique elements in a vector

0 votes
Accepted

Is this a linear optimization problem? $Ax=0$, $A$ has $m$ rows and $n$ columns, $m \le n$, all entries of $x$ are non-negative

1 vote

Complexity of Restoring Optimality after Adding a Point to an Optimal Tour

0 votes

A class of tilings with amazing visual qualities

2 votes

The missing link: an inequality

3 votes

Affine Hyperplane Arrangements in $\mathbb R^d$

0 votes
Accepted

finding dominating cycles in $2K_2$-free graphs

5 votes

Would you resubmit a research paper after it has been superseded by another as yet unpublished paper?

5 votes
Accepted

Intersecting a convex polytope with the unit sphere

3 votes

Paper, open source English translation

1 vote

For which finite groups $G$ does the Wedderburn decomposition of $\mathbb{Q}[G]$ consist only of fields and division algebras?

2 votes

Do character tables determine association schemes up to isomorphism?

3 votes

Describing the action of $^2E_6(q)$

1 vote

Are there nonlinear projective spaces?

1 vote
Accepted

nonnegative solution of nonhomogeneous under-determined linear system of equations

1 vote
Accepted

How to compute graph ideal or cut ideal of a graph?

4 votes

Tensor and symmetric invariants of Symmetric group

9 votes

Why sum of three squares of real polynomials is a sum of two squares?

6 votes

Realization of irreducible $\mathfrak{S}_d$-modules and the representation theory of Lie algebra

1 vote

When have we lost a body of mathematics because errors were found?

2 votes

Eigenvalues of partial Hankel matrices

6 votes

Complexity of solving systems of linear diophantine equations

8 votes

Transitive permutation groups which all of their proper subgroups are intransitive

3 votes
Accepted

Torsion-free, normal subgroups of certain Coxeter groups

10 votes

Cayley graphs of $A_n.$

3 votes

Self-complementary block designs

4 votes
Accepted

Graphs cospectral with Cayley graphs

8 votes
Accepted

spectrum of Hadamard matrices

1 2 3
4
5
10