Search
Now showing items 1-2 of 2
The algebra of smooth functions of rapid descent
(JOOUST, 2009)
A bounded operator with the spectrum lying in a compact set V ⊂
R, has C∞(V ) functional calculus. On the other hand, an operator H acting on
a Hilbert space H, admits a C(R) functional calculus if H is self-adjoint. So ...
Operators with slowly growing resolvents towards the spectrum
(International Journal of Pure and Applied Mathematics, 2009-03)
A closed densely defined operator H, on a Banach space X, whose spectrum is contained in R and satisfies