Search Results
Search type | Search syntax |
---|---|
Tags | [tag] |
Exact | "words here" |
Author |
user:1234 user:me (yours) |
Score |
score:3 (3+) score:0 (none) |
Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
Views | views:250 |
Code | code:"if (foo != bar)" |
Sections |
title:apples body:"apples oranges" |
URL | url:"*.example.com" |
Saves | in:saves |
Status |
closed:yes duplicate:no migrated:no wiki:no |
Types |
is:question is:answer |
Exclude |
-[tag] -apples |
For more details on advanced search visit our help page |
Questions related to permutations, bijections from a finite (or sometimes infinite) set to itself.
11
votes
Number of permutations with longest increasing subsequences of length at most $n$
The gross asymptotics are that the $k$th root of the number of such permutations approaches $n^2$. … Note that in most of the literature, $k$ and $n$ will play the opposite roles, i.e., the question will be about enumeration of permutations in $S_n$ with no increasing subsequence of size greater than …