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2:04 AM
Dumb question. Is there any easy way to see that an E_3 structure in the nerve of a category gives a symmetric monoidal structure by using that an E_3 structure is the same as a E_1 structure in a braided monoidal category?
 
 
7 hours later…
9:31 AM
@DanLucioPrada I don't think there is any reason to apologize.
@user40276 How is that a dumb question?
 
10:30 AM
@SeanTilson Well it's mentioned everywhere as something trivial
 
 
3 hours later…
1:25 PM
Hi all, I've a question about notations in the Adams spectral sequence. what is the meaning of a "dotted" arrow sloped to the right?
as you can see at page 75 in this paper of Dan Freed (second table)
 

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