I had mixed feelings when I thought how I should prepare the book for the second edition. It
was clear to me that I had to correct all mistakes and misprints that were found in the book …

This volume deals with those topics of mathematical physics, associated with the study of the
Schrödinger equation, which are considered to be the most important. Chapter 1 presents …

1.1. Abstract preliminaries 1.2. Minimal and maximal operators, essential self-adjointness
for differential operators (basic definitions and notations) 1.3. Finite speed propagation and …

Contents Introduction § 1. The Bohr compactum of a locally compact Abelian group and
almost periodic functions § 2. Approximations of almost periodic functions by trigonometric …

The genus Yersinia has been used as a model system to study pathogen evolution. Using
whole-genome sequencing of all Yersinia species, we delineate the gene complement of the …

Abstract CONTENTS Introduction § 1. Non-standard analysis and ordinary differential
equations § 2. Existence of solution-ducks § 3. Approximations of ducks § 4. Qualitative …

In this paper we study geometry of symmetric torsion-free connections which preserve a
given symplectic form

Several conditions are obtained ensuring the essential self-adjointness of a Schrödinger-type
operator, where is a first-order elliptic differential operator acting on the space of sections …

From the reviews:"... I think the volume is a great success... a welcome addition to the literature..."
The Mathematical Intelligencer, 1993"... It is comparable in scope with the great Courant…

We study in this paper the spectral distribution of the Laplace operator acting on k-forms on
a complete Riemannian manifold M. If M is compact this distribution is expressed by the (…