Published online by Cambridge University Press: 07 October 2011
Since its creation by Kontsevich in 1995, motivic integration has developed quickly in several directions and has found applications in various domains, such as singularity theory and the Langlands program. In its development, it incorporated tools from model theory and nonarchimedean geometry. The aim of the present book is to give an introduction to different theories of motivic integration and related topics.
Motivic integration is a theory of integration for various classes of geometric objects. One term in this “trade-name” seems unusual: motivic. What is a motive and in what sense is this theory of integration motivic? These questions lie at the heart of the theory. We will try to answer them in Section 4. First, we briefly introduce the two other protagonists of the present book: model theory and non-archimedean geometry. We will explain below how they interact with the theory of motivic integration.
Model theory
A central notion in model theory is language. A language ℒ is a collection of symbols, divided into three types: function symbols, relation symbols, and constant symbols. For every function symbol and relation symbol, one specifies the number of arguments. A formula in the language ℒ is built from these symbols, variables, Boolean combinations and quantifiers.
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