A formula for the inner spectral radius
Seyed Mahmoud Manjegani · International Journal of Mathematics and Mathematical Sciences · 2004
This note presents an asymptotic formula for the minimum of the moduli of the elements in the spectrum of a bounded linear operator acting on Banach space X. This minimum moduli is called the inner spectral radius, and the formula established herein is an analogue of Gelfand′s spectral radius formula.