Roots of unity and lepton mixing patterns from finite flavour symmetries

Abstract

The classification of lepton mixing matrices from finite residual symmetries is reviewed, with emphasis on the role of vanishing sums of roots of unity for the solution of this problem.

Comments: 6 pages, no figures, talk presented at XXXIX International Conference of Theoretical Physics "Matter to the Deepest," Ustron, Poland, September 13-18, 2015