Now showing items 1-3 of 3
On infinitely differentiable solutions of ordinary differential equations
Abstract Not Available.
Some applications of adherent series
The notion of "adherence", or "adherent series" has been created by Mandelbrojt and applied to a number of diverse problems, such as generalized quasianalyticity, the theory of closure of certain sequences of functions, ...
On invariant subspaces of a normal operator
Our principal interest, in the work that follows, is the discovery of conditions on the spectrum of a normal operator which imply that the operator has invariant non-reducing subspaces. We were led to this study by the ...