nLab
sigma-orientation

Context

Cohomology

cohomology

Special and general types

Special notions

Variants

Extra structure

Operations

Theorems

String theory

Contents

Idea

A σ\sigma-orientation is an orientation in generalized cohomology for elliptic cohomology. A universal such orientation is a string orientation of tmf. See there for more details.

References

Last revised on March 14, 2014 at 08:10:41. See the history of this page for a list of all contributions to it.