User Max Alekseyev

1 vote

Accepted

Asymptotic for a sum involving GCD and Euler totient function

answered Nov 19, 2022 at 1:15

3 votes

How many ways to pick k integers with fixed sum and product

answered Nov 13, 2022 at 22:37

3 votes

Accepted

Counting numerical semigroups by largest element of minimal generating set

answered Nov 13, 2022 at 16:37

1 vote

Accepted

Number of sets of columns "connecting" top to bottom of a matrix

answered Nov 12, 2022 at 18:29

1 vote

Accepted

Number of couples of columns "connecting" top to bottom of a matrix

answered Nov 12, 2022 at 17:59

3 votes

Accepted

Non-convex combination of vectors

answered Nov 11, 2022 at 12:01

4 votes

Method to solve system of exponential sums of the form $a^x+b^x=c$ given more equations than variables

answered Nov 6, 2022 at 9:44

3 votes

Accepted

A query about modular arithmetic on a matrix

answered Oct 23, 2022 at 14:59

6 votes

Accepted

Finding an optimal covering trail for the set $\{0,1,2,3\}\times\{0,1,2,3\}\times\{0,1,2,3\}$

answered Oct 18, 2022 at 18:59

11 votes

Accepted

Is there a recurrence for the coefficients of the Laurent series expansion of $\frac{1}{1-e^{e^x - 1}}$?

answered Oct 13, 2022 at 3:25

2 votes

Decomposition of even symmetric polynomials and Euler numbers

answered Oct 12, 2022 at 19:17

6 votes

Accepted

Conjecture on sum over permutations of products of Catalan numbers

answered Sep 30, 2022 at 15:22

3 votes

Accepted

Library/Database of parametric polynomial systems

answered Sep 25, 2022 at 11:38

5 votes

Accepted

Number of coefficients equal to $k$ in certain "Fibonacci polynomials"

answered Sep 22, 2022 at 12:46

2 votes

Accepted

Partition of $(2^{n+1}+1)2^{2^{n-1}+n-1}-1$ into parts with binary weight equals $2^{n-1}+n$

answered Sep 18, 2022 at 16:30

6 votes

Expected length of longest stick in a stick snapping process

answered Sep 13, 2022 at 13:48

1 vote

A combinatorial matrix reconstruction problem II

answered Aug 30, 2022 at 13:25

3 votes

Only trivial solutions to system of linear diophantine equations possibly related to hamiltonian cycles in graphs

answered Aug 28, 2022 at 15:43

1 vote

Accepted

Given a set of vectors how to pick $M$ such that sum of maximums of coordinates is maximized?

answered Aug 28, 2022 at 13:57

2 votes

Integer linear constraint(s) for y= x1 XOR x2

answered Aug 22, 2022 at 18:26

3 votes

Accepted

Simple estimation of difference of powers of 2 and powers of 3?

answered Aug 13, 2022 at 14:13

5 votes

How to calculate the sum of general type $\sum_{k=0}^n {n\choose k} {n\choose k+a} {2 k- n + a \choose r }$?

answered Aug 7, 2022 at 14:23

7 votes

Accepted

A variant of numeric Vandermonde which failed symbolically?

answered Jul 29, 2022 at 3:31

2 votes

Existence of solution for a system of quadratic diophantine equations / symmetric quadratic froms

answered Jun 30, 2022 at 14:29

3 votes

Accepted

A diophantine equation inspired in a conjecture due to Gica and Luca, example of a large Mersenne exponent

answered Jun 27, 2022 at 14:51

8 votes

Accepted

Vandermonde $V_n$ mod $n$

answered Jun 26, 2022 at 16:15

7 votes

Accepted

Small covering of divisors

answered Jun 25, 2022 at 19:20

14 votes

Accepted

Does there exist a Latin square of order 9 for which its 9 broken diagonals and 9 broken antidiagonals are transversals?

answered Jun 24, 2022 at 2:58

6 votes

Software tools to find square root modulo $2^t$

answered Jun 17, 2022 at 22:38

1 vote

Accepted

Solutions to a system of Diophantine equations

answered Jun 17, 2022 at 19:25

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594 Answers

Asymptotic for a sum involving GCD and Euler totient function

How many ways to pick k integers with fixed sum and product

Counting numerical semigroups by largest element of minimal generating set

Number of sets of columns "connecting" top to bottom of a matrix

Number of couples of columns "connecting" top to bottom of a matrix

Non-convex combination of vectors

Method to solve system of exponential sums of the form $a^x+b^x=c$ given more equations than variables

A query about modular arithmetic on a matrix

Finding an optimal covering trail for the set $\{0,1,2,3\}\times\{0,1,2,3\}\times\{0,1,2,3\}$

Is there a recurrence for the coefficients of the Laurent series expansion of $\frac{1}{1-e^{e^x - 1}}$?

Decomposition of even symmetric polynomials and Euler numbers

Conjecture on sum over permutations of products of Catalan numbers

Library/Database of parametric polynomial systems

Number of coefficients equal to $k$ in certain "Fibonacci polynomials"

Partition of $(2^{n+1}+1)2^{2^{n-1}+n-1}-1$ into parts with binary weight equals $2^{n-1}+n$

Expected length of longest stick in a stick snapping process

A combinatorial matrix reconstruction problem II

Only trivial solutions to system of linear diophantine equations possibly related to hamiltonian cycles in graphs

Given a set of vectors how to pick $M$ such that sum of maximums of coordinates is maximized?

Integer linear constraint(s) for y= x1 XOR x2

Simple estimation of difference of powers of 2 and powers of 3?

How to calculate the sum of general type $\sum_{k=0}^n {n\choose k} {n\choose k+a} {2 k- n + a \choose r }$?

A variant of numeric Vandermonde which failed symbolically?

Existence of solution for a system of quadratic diophantine equations / symmetric quadratic froms

A diophantine equation inspired in a conjecture due to Gica and Luca, example of a large Mersenne exponent

Vandermonde $V_n$ mod $n$

Small covering of divisors

Does there exist a Latin square of order 9 for which its 9 broken diagonals and 9 broken antidiagonals are transversals?

Software tools to find square root modulo $2^t$

Solutions to a system of Diophantine equations