Haar measure

Nicolas Bourbaki

Chapter Chapter VII in Integration II, 2004, pp 1-94 from Springer

Abstract: Abstract In this chapter and in the next, when we speak of a function (resp. a measure), it will be understood to be either a real or a complex function (resp. measure); if T is a locally compact space, the notation K(T) will denote either the space KR(T) or the space KC(T); similarly for the notations % MathType!MTEF!2!1!+- % feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqr1ngB % PrgifHhDYfgasaacH8srps0lbbf9q8WrFfeuY-Hhbbf9v8qqaqFr0x % c9pk0xbba9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qqQ8fr % Fve9Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaadaqdaa % qaaiabeE8aJjaacIcacaWGubGaaiykaaaaaaa!3BA3! $$ \overline {\chi (T)} $$ , C(T), Lp(T,μ), M(T), etc. It is of course understood that in a situation involving several functions, measures or vector spaces, the results obtained are valid when these functions, measures or vector spaces are all real or all complex. The space % MathType!MTEF!2!1!+- % feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqr1ngB % PrgifHhDYfgasaacH8srps0lbbf9q8WrFfeuY-Hhbbf9v8qqaqFr0x % c9pk0xbba9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qqQ8fr % Fve9Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaadaqdaa % qaaiabeE8aJjaacIcacaWGubGaaiykaaaaaaa!3BA3! $$ \overline {\chi (T)} $$ will always be assumed to be equipped with the topology of uniform convergence, the space C(T) with the topology of compact convergence, and the space C(T) with the direct limit topology whose definition is reviewed at the beginning of Chapter VI. The notation C+(T) will denote the set of functions ≥ 0 of C(T). If A ⊂ T, φA will always denote the characteristic function of A. If t Є T, εt will denote the positive measure defined by the mass +1 at the point t.

Keywords: Compact Subset; Invariant Measure; Homogeneous Space; Compact Group; Positive Measure (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1007/978-3-662-07931-7_1

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