Talk:Spectral gap

Hi

A much better definition was written on the introduction of the paper "An Estimate of the Gap of Spectrum of Schro� dinger Operators which Generate Hyperbounded Semigroups" By "Shigeki Aida"

with gratitude

Hfinizadeh{at}gmail.com — Preceding unsigned comment added by 2.176.201.137 (talk) 10:23, 13 November 2015 (UTC)