# Contents

## Statement

Let $A$ be a Hopf algebra over a field $k$, and let $B$ be a normal su Hopf algebra of $A$. Then

$Cotor_A(B,k) \simeq Cotor_{A//B}(k,k) \,.$

This is used in computations with the Adams spectral sequence.

## References

Due to

• A. Liulevicius, Notes on Homotopy of Thorn Spectra, Amer. J. of Math., 86 (1964), 1-16.

Textbook accounts include

Last revised on March 15, 2016 at 17:01:47. See the history of this page for a list of all contributions to it.