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Mathematics
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john_leo
  • Member for 12 years, 8 months
  • Last seen more than a month ago
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question
10
"Ballot numbers" sum up to Catalan numbers
Jun 21, 2012
question
7
Exponential Generating Function of rooted minimal directed acyclic graphs
Feb 3, 2015
question
4
Closed form or asymptotics of $\sum_{i=0}^n\binom{n}{i}\log(i+1) $
Mar 14, 2014
answer
4
motivation for $1/(1-x)$ used in generating functions
Sep 30, 2014
question
3
Confusion about Generating Function of Restricted Partitions
Oct 6, 2014
question
3
A Mellin Transform of a generating function
May 15, 2015
answer
3
Prove combinatorics problem $\sum_{k=0}^n {2k \choose k}{2n-2k \choose n-k}=4^n$ using generating functions
May 8, 2014
question
2
Asymptotics of shifted Catalan numbers
Feb 10, 2012
question
2
Understanding an Approximation
Nov 7, 2013
question
2
Generating Function via Recurrence Relation
Nov 13, 2013
Top network posts
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27
Is there a regular tree language in which the average height of a tree of size $n$ is neither $\Theta(n)$ nor $\Theta(\sqrt{n})$?
18
What is the earliest use of "trees" in computer science?
17
The number of different regular languages
14
The number of different regular languages
12
What is the definition of Computer Science, and what is the Science within Computer Science?