Some Results on Fredholm Operators, Essential Spectra, and Application

Perturbation theory for nullity, deficiency and other quantities of linear operators

Tosio Kato · Journal d Analyse Mathématique · 1958 · 524 citations

Natural Sciences, Mathematics, Differential Equations +13

Unbounded Linear Operators.

U. D'Ambrosio, Seymour Goldberg · American Mathematical Monthly · 1968 · 292 citations

<i>An Introduction to Transport Theory</i>

G. Milton Wing, George H. Weiss · Physics Today · 1963 · 283 citations

Engineering, Mathematics, Physics +10

An introduction to transport theory

A. Claesson · Nuclear Instruments and Methods · 1963 · 162 citations

Natural Sciences, Mathematics, Physics +10

On the essential spectrum of partial differential boundary problems

František Wolf · Communications on Pure and Applied Mathematics · 1959 · 136 citations

Natural Sciences, Mathematics, Physics +14