English

Analysis of two step nilsequences

Dynamical Systems 2007-09-21 v1 Combinatorics Number Theory

Abstract

Nilsequences arose in the study of the multiple ergodic averages associated to Furstenberg's proof of Szemer\'edi's Theorem and have since played a role in problems in additive combinatorics. Nilsequences are a generalization of almost periodic sequences and we study which portions of the classical theory for almost periodic sequences can be generalized for two step nilsequences. We state and prove basic properties for 2-step nilsequences and give a classification scheme for them.

Keywords

Cite

@article{arxiv.0709.3241,
  title  = {Analysis of two step nilsequences},
  author = {Bernard Host and Bryna Kra},
  journal= {arXiv preprint arXiv:0709.3241},
  year   = {2007}
}
R2 v1 2026-06-21T09:19:33.663Z