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 posets
Search options not deleted
user 88133
A poset or partially ordered set is a set endowed with a partial order, meaning a binary relation $\leq$ which is reflexive ($x \leq x$ for all $x$), antisymmetric ($x\leq y$ and $y\leq x$ implies $x=y$), and transitive ($x\leq y$ and $y\leq z$ implies $x \leq z$).
6
votes
Zorn's lemma: old friend or historical relic?
Here's another example, from a rather worm's-eye view. (Apologies for too many edits.)
Theorem: Let $R$ be a non-zero commutative ring with $1$.
Then there exists a minimal prime ideal in $R$, i.e., a …
- 6,237
11
votes
0
answers
252
views
Poset of nonvanishing minors of a matrix
What posets can be realized in this way? Does it depend on the field? What if we restrict to integer $0$-$1$ matrices? …
- 6,237