Browsing Revista Colombiana de Matemáticas by Author "Rao, Duggirala K."
Now showing items 1-1 of 1
-
Symmetric perturbation of a self-adjoint operator
Rao, Duggirala K.We give a proof, which is valid in both real and complex Hilbert spaces, of the following result: If A is self-adjoint, B is symmetric D(B) ⊃ D(A), || Bx|| and lt; a ||x|| + ||Ax|| for x∈ D(A), then A+bB is self-adjoint ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Matemáticas.