Skip to main content
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
Search options not deleted user 8590

Enriched categories, topoi, abelian categories, monoidal categories, homological algebra.

8 votes
0 answers
142 views

What are filtered colimits in the category of complete semilattices?

My question is basically stated in the title. Does somebody know an explicit description of the filtered colimits in the category of complete semilattices? I am happy to provide background explaining …
Niemi's user avatar
  • 1,498
6 votes

Lawvere theories versus classical universal algebra

The following point is of course related to the fact that you can use models different from Set, but I think it deserves to be discussed explicitly. Every clone (in the unverisal algebra sense) can b …
Niemi's user avatar
  • 1,498
5 votes
2 answers
694 views

Finiteness and cardinality in abstract categories

My question is a very simple one. What ways are there to generalize terms such as cardinality (or, more generally, the concept of finiteness) to abstract (and not concretizable) categories? I have s …
Niemi's user avatar
  • 1,498
4 votes

Presenting Lawvere theories?

Maybe the following explanation might help a bit: I think you should not compare Lawvere theories with clones from universal algebra, as the two things are not on the same level of generality even wi …
Niemi's user avatar
  • 1,498