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01:04
@AaronMazel-Gee The titles of the first two of those talks sound very similar to a talk I heard Jacob give once. Someone asked me about the talk when it was still fresh in my mind and this is the summary I emailed back:

Jacob didn't assume the audience knew about Morava K theory, so that took up the vast
majority of the time. He worked his way up to the statement of the
following theorem:

Theorem. Let X be p-finite (finitely many nonzero homotopy groups, each
of which is a finite p-group). Then:
 
2 hours later…
03:04
yeah, I was just at the talk and Omar's description is how it's gone so far (although he hasn't gotten to the rep theory yet, that's talk 2)
03:29
@Nat along the lines of these talks saying that the K(n)'s interpolating between heights 0 and infinity, can HF_p (or some extension of it) be identified with some kind of ultraproduct of the K(n)'s?
 
2 hours later…
05:09
0
Q: Computing Homotopy Fixed Point Spectral Sequences related to Morava E thories

Mingcong ZengGiven a finite subgroup of $G$ sitting inside the Morava stabilizer group $S_n$, we can form the homotopy fixed point spectrum $E_n^{hG}$. There is a spectral sequence with $E_2^{s,t} = H^s(G;\pi_t(E_n)) \Rightarrow \pi_{t-s}(E_n^{hG})$. For resolving further differentials in this spcetral sequ...

Can anyone help me with this?
First question on MO, so nervous
 
3 hours later…
08:06
@TylerLawson we have a notion of a "bounded protoproduct" that should spit out HF_p (@Tomer or @Tobi will correct me if I'm wrong). This is not a deep statement and is just due to the fact that the v_n's have increasing degree as n varies. There is another construction, which is just the protoproduct of the K(n)'s, that may be more interesting.
 
2 hours later…
10:13
Ind-pro-ind-pro-toproduct
 
6 hours later…
15:59
@OmarAntolín-Camarena awesome, thanks!
@EricPeterson great. yeah actually i remember seeing talk #1 come through the "recently added" dropbox stuff, and skimmed through it. i had no idea what it was from, but saw from the date that it was recent
 
4 hours later…
19:33
@ty
@TylerLawson , I did some preliminary computation and it seems that the following (more interesting fact) is true, if you take even periodic k(n) at given prime then there ultra-product id even periodic HF_P (this does not have the same "triviality" problems @NatStapleton was talking about.
It an interesting question, so I'll try to verify this over the weekend
19:50
@Tomer @Nat that's fantastic. does this automatically propagate forward to their module categories?
Thanks!, and yes,
it should
 
3 hours later…
23:04
This paper seems to suggest that one can get $CP^n$ as the fixed points of some kind of $SU(k)$ action on $CP^{n+k}$. Is that even close to true? projecteuclid.org/download/pdf_1/euclid.ojm/1200757863
23:51
I guess it's clearly not true as written, since $SU(1)$ is trivial.

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