Skip to main content
Mathematics
Alexander Burstein's user avatar
Alexander Burstein's user avatar
Alexander Burstein's user avatar
Alexander Burstein
  • Member for 6 years, 8 months
  • Last seen this week
Profile Activity
Stats
4,175
reputation
80k
reached
127
answers
12
questions
Communities
About

Professor at the Department of Mathematics at Howard University. Interested in enumerative combinatorics, especially permutation patterns and permutation statistics.

Badges
View all badges
This user doesn’t have any gold badges yet.
13
silver badges
31
bronze badges
Top tags
View all tags
129
Score
65
Posts
47
Posts %
54
Score
23
Posts
17
Posts %
36
Score
15
Posts
11
Posts %
33
Score
18
Posts
13
Posts %
29
Score
14
Posts
10
Posts %
28
Score
13
Posts
9
Posts %
Top posts
View all questions and answers
12
Evaluate $ \lim_{n \to \infty} \sin^n\left(\frac{2\pi n}{3n+1}\right)$
Jul 20, 2023
11
Value of $\displaystyle \frac{p}{q}$ in binomial expression.
Mar 27, 2023
10
Is this a new discovery in the diagonals of Pascal's triangle?
Feb 25, 2023
7
A bijection between Motzkin paths and 3-colored signed Dyck path homomorphs
Feb 24, 2018
7
Generating function: $a_n = \sum\limits_{k=0}^n \frac{1}{k + 1} {{n + k} \choose {n - k}} {{2k} \choose {k}}$
Nov 7, 2017
7
How many times do you have to use L'Hôpital's rule?
Nov 10, 2017
6
Is the numerator of $\sum_{k=0}^{n}{(-1)^k\binom{n}{k}\frac{1}{2k+1}}$ always a power of $2$ in lowest terms?
Apr 10, 2018
6
Natural bijections between Dyck paths
Feb 17, 2018
6
Simple proof that $\lfloor \log_2 k \rfloor + 1 = \lceil \log_2 (k + 1) \rceil$
Dec 11, 2017
6
An efficient approach to combinations of pairs in groups without repetitions?
Jan 31, 2019
Top network posts
View all network posts
16
A combinatorial interpretation for $n$-ary trees for negative $n$
11
Proofs of some combinatorial identities
10
A bijective proof for the odd companion to Shapiro's Catalan convolution
9
Involutions in $\mathbb{F}_p[[x]]$
7
Result attribution for eigenvalues of a matrix of Pascal-type