# Generic character sheaves on disconnected groups and character values

**Authors:** G. Lusztig

arXiv: 0704.0999 · 2007-05-23

## TL;DR

This paper extends the theory of character sheaves to disconnected reductive groups, linking geometric objects with representation characters over finite fields, generalizing known results from connected groups.

## Contribution

It introduces a framework connecting generic character sheaves on disconnected groups with representation characters, broadening the scope of geometric representation theory.

## Key findings

- Established a correspondence between character sheaves and representation characters for disconnected groups.
- Extended known results from connected to disconnected reductive groups.
- Provided new tools for studying representations via geometric methods.

## Abstract

We relate a generic character sheaf on a disconnected reductive group with a character of a representation of the rational points of the group over a finite field extending a result known in the connected case.

## Full text

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## References

7 references — full list in the complete paper: https://tomesphere.com/paper/0704.0999/full.md

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Source: https://tomesphere.com/paper/0704.0999