In this book the authors describe the important generalization of the original Weil conjectures, as given by P. Deligne in his fundamental paper "La conjecture de Weil II". The authors follow the important and beautiful methods of Laumon and Brylinski which lead to a simplification of Deligne's theory. Deligne's work is closely related to the sheaf theoretic theory of perverse sheaves. In this framework Deligne's results on global weights and his notion of purity of complexes obtain a satisfactory and final form. Therefore the authors include the complete theory of middle perverse sheaves. In this part, the l-adic Fourier transform is introduced as a technique providing natural and simple proofs. To round things off, there are three chapters with significant applications of these theories.

Describes the important generalisation of the original Weil conjectures For the first time the authors describe Deligne's work in the framework of the sheaf theoretic theory of perverse sheaves The l-adic Fourier transform is introduced as a powerful tool Presents important applications Includes supplementary material: sn.pub/extras

Inhalt
I. The General Weil Conjectures (Deligne's Theory of Weights).- II. The Formalism of Derived Categories.- III. Perverse Sheaves.- IV. Lefschetz Theory and the BrylinskiRadon Transform.- V. Trigonometric Sums.- VI. The Springer Representations.- B. Bertini Theorem for Etale Sheaves.- C. Kummer Extensions.- D. Finiteness Theorems.