Toward a theory of neutrino mass and mixing

Abstract

Among numerous theoretical ideas, approaches, mechanisms, models there are probably few elements which will eventually enter the true theory of neutrino masses and mixing. The task is to identify them. Still something conceptually important can be missed. The problems of construction of the theory are outlined. Perspectives and possible future developments are discussed.

Comments: LaTex, 11 pages, 1 figure. Based on lectures given at the Mayorana school, Modica, Sicily, July 4 - 14, 2023