Contents

# Contents

## Idea

The concept of Borcherds algebra or Borcherds-Kac-Moody algebra is a generalization of that of Kac-Moody algebra (hence also called generalized Kac-Moody algebra) obtained by allowing imaginary simple roots.

## References

Relation to U-duality and E11 is discussed in

and specifically to exceptional generalized geometry in

• Jakob Palmkvist, Exceptional geometry and Borcherds superalgebras (arXiv:1507.08828)

• Jakob Palmkvist, Tensor hierarchies, Borcherds algebras and $E_{11}$, JHEP 1202 (2012) 066 (arXiv:1110.4892)

Last revised on July 30, 2017 at 02:26:19. See the history of this page for a list of all contributions to it.