Timeline for Intuition for coends
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 20, 2011 at 16:03 | vote | accept | K Shao | ||
| Oct 19, 2011 at 0:53 | comment | added | Todd Trimble | Thanks, Mike. I agree that tensor products, and generalized tensor products, are in some sense the crucial examples to understand. (I mean the tensor product of a "left module" $C \to Set$ with a "right module" $C^{op} \to Set$, where $C$ is a small category, and possibly replacing $Set$ by some other $V$ in which $C$ is enriched.) | |
| Oct 19, 2011 at 0:22 | comment | added | Mike Shulman | This is an excellent answer. I would just like to add that I think the example of the tensor product of modules is a very useful one. I really only started to feel that I understood coends when I started to think of functors as a generalization of modules and coends (or the special case of the "tensor product of functors", at least) as a generalization of tensor product of modules. | |
| Oct 18, 2011 at 20:18 | history | answered | Todd Trimble | CC BY-SA 3.0 |