English

Fundamental domains for properly discontinuous affine groups

Group Theory 2016-05-13 v2

Abstract

We construct a fundamental region for the action on the 2d+12d+1-dimensional affine space of some free, discrete, properly discontinuous groups of affine transformations preserving a quadratic form of signature (d+1,d)(d+1, d), where dd is any odd positive integer.

Keywords

Cite

@article{arxiv.1303.3766,
  title  = {Fundamental domains for properly discontinuous affine groups},
  author = {Ilia Smilga},
  journal= {arXiv preprint arXiv:1303.3766},
  year   = {2016}
}

Comments

This is the version published in Geometriae Dedicata. It incorporates the corrections suggested by the reviewer. Most of these are minor, except for one: I replaced the term 'Lagrangian' (which, given the context, was not quite proper) by 'MTIS' (short for 'maximal totally isotropic subspace')

R2 v1 2026-06-21T23:42:41.266Z