Timeline for Sign in the product of the LHS spectral sequence
Current License: CC BY-SA 3.0
2 events
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| Jan 10, 2012 at 9:18 | comment | added | tj_ | I also read this part in the book of Evens. But in the tensor product $Hom_Q(Y,M) \otimes Hom_Q(Y,N) \to Hom_{Q\times Q}(Y\otimes Y,M\otimes N)$ there is no sign (likewise for $H$). Therefore I don't understand why there is suddenly a sign in the tensor product of $Hom_Q(Y,Hom_H(X,M))$ and $Hom_Q(Y,Hom_H(X,N))$. | |
| Jan 9, 2012 at 22:22 | history | answered | Chris Gerig | CC BY-SA 3.0 |