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Ilya Bogdanov's user avatar
Ilya Bogdanov's user avatar
Ilya Bogdanov
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367 Answers

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0 votes

Isometric path cover number of the 2 dimensional grid graph

3 votes
Accepted

A question on classification of quadratic polynomials in even characteristic

4 votes
Accepted

Left-shift cycle generating maps $f:\{0,1\}^{c_0}\to\{0,1\}$ for fixed length $c_0$

9 votes
Accepted

A rational function related to Fibonacci numbers

17 votes

Multiply an integer polynomial with another integer polynomial to get a "big" coefficient

5 votes
Accepted

Nonempty intersection of cosets of finite-index subgroups

5 votes
Accepted

Does "perpendicular phase incoherence" satisfy the triangle inequality?

2 votes
Accepted

Inductive Cholesky decomposition to prove that a function is positive definite over the natural numbers?

8 votes
Accepted

Conjecture on A057030

1 vote

Number of bitangents to convex polytopes

34 votes
Accepted

Does this expression always vanish?

6 votes
Accepted

Representation of a number as a product of $\sqrt{n^2 + 1} + n$

1 vote
Accepted

Find an order-embedding of $S_3\times{\bf2}\times{\bf2}$ into ${\mathbb Z}^4$

2 votes

Graphs admitting an 1-Lipschitz map from edge mid-points to vertices

3 votes
Accepted

A second attempt at a two-dimensional Higman's Lemma

1 vote
Accepted

Detecting linear operator from actions of powers on subspace

7 votes
Accepted

Hyperbolic fixed points of SL(2,Z)

6 votes
Accepted

Pair matching between divisors less and more than $\sqrt{N}$

4 votes

Catalan and path pairs in polynomials

5 votes

Products involving exponents of tribonacci numbers

5 votes
Accepted

An inequality for certain positive-definite matrices

3 votes
Accepted

Existence of some lattice path connecting all given lattice paths

6 votes

Do graphs with an odd number of walks of length $\ell$ between any two vertices exist?

4 votes
Accepted

Is a continuous rational function Lipschitz?

2 votes
Accepted

Edge-length constraints from greedy matching

5 votes

Divisibility of special polynomials

1 vote

Rademacher complexity for a family of bounded, nondecreasing functions?

1 vote
Accepted

Symmetric and nearly additive bounded functions

12 votes
Accepted

a problem in complex-variable inequality

1 vote
Accepted

Companion matrices must have geometric multiplicity one, linear recurrence sequence view

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