Operator differentiable functions

Hankel operators in the perturbation theory of unitary and self-adjoint operators

Vladimir Peller · Functional Analysis and Its Applications · 1985 · 163 citations

Spectral Theory, Linear Operator, Engineering +7

Relative hermitian matrices

Magnus R. Hestenes · Pacific Journal of Mathematics · 1961 · 94 citations · Full text

Spectral Theory, Representation Theory, Relative Hermitian Matrices +3

Relative self-adjoint operators in Hilbert space

Magnus R. Hestenes · Pacific Journal of Mathematics · 1961 · 78 citations · Full text

Hilbert Space, Linear Operator, Resolvent Kernel +1

Topics in Mathematical Physics

Joel Campbell · PhDT · 1991 · 60 citations

Theoretical Physics, Fundamental Physic

Example of a Lipschitz function of self-adjoint operators that gives a nonnuclear increment under a nuclear perturbation

Yu. B. Farforovskaya · Journal of Mathematical Sciences · 1975 · 24 citations

Spectral Theory, Engineering, Lipschitz Function +3