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 |
Enriched categories, topoi, abelian categories, monoidal categories, homological algebra.
1
vote
`Topos' with alternate subobject lattice?
Probably not the complete picture, but my impression was that one of the reasons that Heyting lattices play such a large role with topoi is that the Heyting lattice definition captures the properties …
4
votes
Accepted
F is ultrafilter over a Boolean algebra implies that for every b, either b or not-b is in F?
Assume you have a proper filter $F$ that avoids both $b$ and $\neg b$. Then, you could consider the filter generated by $F\cup\{b\}$ - which is to say the smallest filter $F'$ containing $F$ and $b$. …
7
votes
Learning to Think Categorically
First, WHY do you want to learn categories?
Not that I don't think it's a good idea - only your approach vector will influence, strongly, what a good approach will consist of. I approached categories …
11
votes
Terminology in category theory
As for the limit example, it is rooted in analysis by way of topology.
A topology on some set X is a system of subsets, partially ordered by inclusion, that have arbitrary joins and finite meets (or …
15
votes
Programming Languages Based on Category Theory
There's Charity.