English

Ramanujan sums as supercharacters

Number Theory 2014-10-23 v4 Representation Theory

Abstract

The theory of supercharacters, recently developed by Diaconis-Isaacs and Andre, can be used to derive the fundamental algebraic properties of Ramanujan sums. This machinery frequently yields one-line proofs of difficult identities and provides many novel formulas. In addition to exhibiting a new application of supercharacter theory, this article also serves as a blueprint for future work since some of the abstract results we develop are applicable in much greater generality.

Keywords

Cite

@article{arxiv.1201.1060,
  title  = {Ramanujan sums as supercharacters},
  author = {Christopher F. Fowler and Stephan Ramon Garcia and Gizem Karaali},
  journal= {arXiv preprint arXiv:1201.1060},
  year   = {2014}
}

Comments

32 pages. Comments welcome

R2 v1 2026-06-21T20:00:29.571Z