Intégration is the sixth and last of the Books that form the core of
the Bourbaki series; it draws abundantly on the preceding five Books,
especially General Topology and Topological Vector Spaces, making it
a culmination of the core six. The power of the tool thus fashioned is
strikingly displayed in Chapter II of the author's Théories
Spectrales, an exposition, in a mere 38 pages, of abstract harmonic
analysis and the structure of locally compact abelian groups.
The present volume comprises Chapters 1-6 in English translation (a
second volume will contain the remaining Chapters 7-9). The individual
fascicles of the original French edition have been extensively reviewed.
Chapters 1-5 received very substantial revisions in a second edition,
including changes to some fundamental definitions. Chapters 6-8 are
based on the first editions of Chs. 1-5. The English edition has given
the author the opportunity to correct misprints, update references,
clarify the concordance of Chapter 6 with the second editions of
Chapters 1-5, and revise the definition of a key concept in Chapter 6
(measurable equivalence relations).