cohomology

# Contents

## Idea

The notion of twisted differential c-structures applied to Wu classes.

## Applications

See at M5-brane the section Conformal blocks and 7d Chern-Simons dual.

## References

Topological twisted Wu structures are considered in

• Hisham Sati, Twisted topological structures related to M-branes II: Twisted $Wu$ and $Wu^c$ structures (arXiv:1109.4461)

A smooth and differential refinement is discussed in

A truncation of this reproduces the differential integra Wu structures considered in

Revised on February 9, 2012 13:01:02 by Urs Schreiber (82.113.119.176)