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 | |
Results tagged with infinite-combinatorics
Search options answers only
not deleted
user 529975
Combinatorial properties of infinite sets. This is a corner-point of set theory and combinatorics.
51
votes
How decreasing can a bijection $f:\mathbb{N}\to\mathbb{N}$ be?
This problem arises in Section 4.3 of my PhD thesis in connection with a Ramsey-type result for infinite tournaments. The answer of $3/4$ is also confirmed by Theorem 4.5 in that section, and the corr …
- 461