Auteur: S. Helgason

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Analytic Properties of Automorphic L-Functions is a three-chapter text that covers considerable research works on the automorphic L-functions attached by Langlands to reductive algebraic groups. Chap …

Huygens’ Principle and Hyperbolic Equations is devoted to certain mathematical aspects of wave propagation in curved space-times. The book aims to present special nontrivial Huygens’ operators and to …

The theme of this volume is a treatment of differential equations on a $C^/infty$ manifold $V$ by separation of variables techniques. More specifically, given a Lie transformation group $L$ of $V$ an …