Timeline for Which cohomology theories are real- and complex-orientable?
Current License: CC BY-SA 2.5
6 events
| when toggle format | what | by | license | comment | |
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| Mar 7, 2013 at 17:20 | comment | added | Markus Land | So this canonical map $MU \to MO$ will surely factor over $MSO$, right? Can one describe what formal group law it classifies? Do you know any references where this map is studied? | |
| Feb 17, 2011 at 12:28 | history | edited | Neil Strickland | CC BY-SA 2.5 |
Added answer to follow-up question
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| Feb 17, 2011 at 10:39 | comment | added | Neil Strickland | As $F$ is a wedge of $H/2$'s, the same is true of $F\wedge F$, so the multiplication map $F\wedge F\to F$ decomposes into maps $H/2\to H/2$ (of various degrees) ie Steenrod operations. Thus, the ring structure is determined by the Steenrod module structure of the mod 2 homology, but it may package the information in a more convenient way. | |
| Feb 17, 2011 at 9:15 | comment | added | Oscar Randal-Williams | Couldn't the ring structure on $F$ give you new information? | |
| Feb 17, 2011 at 8:56 | vote | accept | Mark Grant | ||
| Feb 16, 2011 at 10:12 | history | answered | Neil Strickland | CC BY-SA 2.5 |