Timeline for Categories on which one can determine all model structures?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jan 19 at 13:24 | history | edited | David White | CC BY-SA 4.0 |
added 617 characters in body
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| Jan 17 at 1:35 | comment | added | Tim Campion | Thanks, David, this is great! | |
| Jan 16 at 21:30 | history | edited | David White | CC BY-SA 4.0 |
Finished my answer, with the extra details I promised.
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| Jan 16 at 21:23 | comment | added | Tom Goodwillie | That's right. There are 5 model structures on Vect. | |
| Jan 16 at 20:39 | comment | added | Tom Goodwillie | Based sets, like sets, has six WFS. But it has only seven model structures. | |
| Jan 16 at 20:38 | comment | added | Tom Goodwillie | The case of vector spaces is not very interesting. There are four WFS: isomorphisms/morphisms, injections/surjections, surjections/injections, morphisms/isomorphisms. The only model structures are the four in which every morphism is a weak equivalence and the one in which only the isomorphisms are weak equivalences. | |
| Jan 16 at 17:06 | comment | added | David White | P.S. I realize I still owe an answer on the Strom model structure problem, and I do plan to think about that just as soon as I tell my calculus students what to read and do before class tomorrow. | |
| Jan 16 at 17:06 | history | answered | David White | CC BY-SA 4.0 |