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Max Alekseyev

Washington, DC, United States

http://home.gwu.edu/~maxal/

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Top Questions
52 votes

Iterations of 2^(n-1)+5: the strong law of small numbers, or something bigger?

nt.number-theory prime-numbers computational-number-theo integer-sequences divisors-multiples asked Oct 9 '16 at 3:54
mathoverflow.net

40 votes

Relaxed Collatz 3x+1 conjecture

nt.number-theory collatz-conjecture asked Sep 3 '15 at 17:05
mathoverflow.net

25 votes

Removal of non-isomorphic edges results in the same graph

co.combinatorics graph-theory extremal-graph-theory counterexamples asked Jul 15 '14 at 17:44
mathoverflow.net

9 votes

When polynomial f(x^2) can be factored as g(x)·g(-x) ?

nt.number-theory real-analysis algorithms polynomials asked Feb 27 '13 at 17:45
mathoverflow.net

9 votes

When adding a constant makes a multivariate polynomial reducible?

computational-number-theo polynomials nt.number-theory diophantine-equations asked Mar 3 '13 at 5:23
mathoverflow.net

9 votes

Integer values of a rational function

diophantine-equations rational-functions computational-number-theo nt.number-theory asked Jul 1 '10 at 16:15
mathoverflow.net

9 votes

Maximum matching in a graph with no “shortcuts”

graph-theory conjectures matching-theory asked Mar 7 '17 at 16:20
mathoverflow.net

7 votes

Minimal representation of a polynomial as a linear combination of squares

polynomials ag.algebraic-geometry asked Jun 2 '13 at 21:56
mathoverflow.net

6 votes

Solving equations in a subset of rational numbers

computational-number-theo nt.number-theory diophantine-equations asked Nov 20 '12 at 17:04
mathoverflow.net

6 votes

Expression for the sum of square roots of zeros of a polynomial

polynomials symmetric-functions real-analysis asked Feb 27 '13 at 1:56
mathoverflow.net

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Top Answers
93
Special rational numbers that appear as answers to natural questions
mathoverflow.net

60
Special rational numbers that appear as answers to natural questions
mathoverflow.net

22
Simple recurrence that fails to be integer for the first time at the 44th term
mathoverflow.net

22
$3^n - 2^m = \pm 41$ is not possible. How to prove it?
mathoverflow.net

20
Positive roots of a polynomial
mathoverflow.net

19
Dividing squares by sums
mathoverflow.net

17
what is the status of this problem? an equivalent formulation?
mathoverflow.net

17
Are there infinitely many natural numbers not covered by one of these 7 polynomials?
mathoverflow.net

16
In search of a combinatorial reasoning for a vanishing sum
mathoverflow.net

15
The GCD-matrix: generalizing a result of Smith?
mathoverflow.net

14
How to get a closed form for a possibly simple combinatorial sequence
mathoverflow.net

14
Examples of integer sequences coincidences
mathoverflow.net

14
What is Lagrange Inversion good for?
mathoverflow.net

14
Almost-converses to the AM-GM inequality
mathoverflow.net

14
Squares in the set $\{\sum_{j=1}^m j^2: m\in\mathbb{N}\}$
mathoverflow.net

13
Integers $b$ such that $n \nmid (b^n-1)$ for $n>1$
mathoverflow.net

13
Prove that these are polynomials
mathoverflow.net

12
Combinatorial identity: $\sum_{i,j \ge 0} \binom{i+j}{i}^2 \binom{(a-i)+(b-j)}{a-i}^2=\frac{1}{2} \binom{(2a+1)+(2b+1)}{2a+1}$
mathoverflow.net

12
How small (in modulus) can a polynomial get?
mathoverflow.net

11
Free open-access peer-reviewed math journals
mathoverflow.net

11
What is this restricted sum of multinomial coefficients?
mathoverflow.net

10
Curious inequality
mathoverflow.net

10
A seemingly simple combinatorial object that must have an easy generating function
mathoverflow.net

10
Binomial Coefficient Identity, Double Series, Floor Function
mathoverflow.net

9
Сlosed formula for $(g\partial)^n$
mathoverflow.net

9
Explanation of OEIS:A000236 - Residue Classes
math.stackexchange.com

9
What are fun elementary subjects in probability?
mathoverflow.net

9
On a Sum of Gamma Functions
mathoverflow.net

9
A question about certain sets of permutations of the ordered pairs $(1,1),(1,2),\cdots,(1,n),\cdots,(n,1),(n,2),\cdots,(n,n)$
mathoverflow.net

9
Important formulas in Combinatorics
mathoverflow.net

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