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Assuming Dependent Choice, uniqueness of the RMK representing measure among Radon measures
Statement
Assume Dependent Choice. If two Radon measures and on an LCH space satisfy for every , then on .
Facts & Assumptions
Given: Dependent Choice (The axiom of dependent choice: a relation in which every element is related to something admits an -indexed chain); are Radon and agree on all integrals.
Under Dependent Choice, LCH cutoffs exist between compact and open sets (LCH Urysohn cutoff). Applying this supplier in step 1.1 is the use of DC here.
Proof
If with compact and open, choose by [L1]. Then Taking the infimum over gives by outer regularity; symmetry gives equality on compact sets.
Inner regularity on open sets now gives for every open . Outer regularity on Borel sets then gives for every Borel , including infinite values.
Depends on
Used by
- Existence of left and right Haar measures Corollary
- Uniqueness of finite Borel measures from their Fourier transforms Corollary
- Left, right, and bi-invariant Borel measures Definition
- Haar measure on an infinite product of compact groups Example
- An RMK functional determines every Borel representing measure uniquely False statement
- Compact-open neighbourhoods on the dual give a neighbourhood basis on the group Lemma
- Continuous functional calculus produces a regular PVM Lemma
- Continuous quotient translation cocycle Lemma
- Density of averaged covariant generators Lemma
- Fourier-Stieltjes transforms determine finite Radon measures Lemma
- Haar change of variables under inversion Lemma
- Haar measure on an abelian group is invariant under inversion Lemma
- Haar null classes and Borel descent on a homogeneous space Lemma
- L¹ of an LCA group is a commutative Banach star algebra under convolution Lemma
- Nonzero multiplicative functionals on L¹ of an LCA group are Fourier evaluations Lemma
- Positive C₀(X) functionals have finite regular representing measures Lemma
- Relative property (T) for SL2(R) semidirect R2 Lemma
- Sobolev pullback and Green identity on Lipschitz graphs Lemma
- Criterion for an invariant quotient measure Proposition
- Compatible dual Haar normalisation Theorem
- Existence of rho-functions and quotient measure classes Theorem
- Independence of rho and equivalent quotient representative Theorem
- The distributional Riesz functional of a subharmonic function is a positive Radon measure Theorem
- The principle of descent and the logarithmic domination principle Theorem
- Uniqueness of left Haar measure up to scale Theorem
- Weil formula with a rho-function Theorem
Dependency tree · two levels
28 results within two dependency steps of this one, each drawn at its shortest distance from it. An arrow runs from a result to what uses it, so the chart reads left to right and ends at this result, which carries a heavier outline. Every node is a link to that result. Click elsewhere on the chart to enlarge it.
Sources
- Donald L. Cohn, Measure Theory, 2nd ed., Chapter 7 (standard reference, not scraped)