# Fixed-point property for affine actions on a Hilbert space

**Authors:** Shin Nayatani

arXiv: 1705.02644 · 2017-05-09

## TL;DR

This paper extends fixed-point results for affine actions of random groups on Hilbert spaces, showing that more general actions also have fixed points, which advances understanding of group actions in geometric group theory.

## Contribution

It proves a new fixed-point theorem for broader classes of affine actions of random groups on Hilbert spaces, generalizing previous results.

## Key findings

- More general affine actions have fixed points
- The fixed-point property holds for a wider class of actions
- Discussion of proof techniques and implications

## Abstract

Gromov showed that for fixed, arbitrarily large C, any uniformly C-Lipschitz affine action of a random group in his graph model on a Hilbert space has a fixed point. We announce a theorem stating that more general affine actions of the same random group on a Hilbert space have a fixed point. We discuss some aspects of the proof.

## Full text

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## References

23 references — full list in the complete paper: https://tomesphere.com/paper/1705.02644/full.md

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Source: https://tomesphere.com/paper/1705.02644