The Contraction Method on C([0,1]) and Donsker's ... - Eurandom

The Contraction Method on C([0,1]) and Donsker's ... - Eurandom The Contraction Method on C([0,1]) and Donsker's ... - Eurandom

25.08.2013 Views

ong>Contractionong> Proof: Let X , Y s.t. L(X ) = µ, L(Y ) = ν and ong>Theong>n E[|X − Y |] ≤ d(µ, ν) + ε. ℓ1(F (µ), F (ν)) ≤ E[|UX + 1 − (UY + 1)|] = EUE[|X − Y |] ≤ EU(ℓ1(µ, ν) + ε). Henning Sulzbach J. W. Goethe-Universität Frankfurt a. M. ong>Theong> ong>Contractionong> ong>Methodong> on C([0, 1]) and Donsker’s ong>Theong>orem

ong>Contractionong> Proof: Let X , Y s.t. L(X ) = µ, L(Y ) = ν and ong>Theong>n E[|X − Y |] ≤ d(µ, ν) + ε. ℓ1(F (µ), F (ν)) ≤ E[|UX + 1 − (UY + 1)|] = EUE[|X − Y |] This gives ≤ EU(ℓ1(µ, ν) + ε). ℓ1(F (µ), F (ν)) ≤ EUℓ1(µ, ν) Henning Sulzbach J. W. Goethe-Universität Frankfurt a. M. ong>Theong> ong>Contractionong> ong>Methodong> on C([0, 1]) and Donsker’s ong>Theong>orem

<str<strong>on</strong>g>C<strong>on</strong>tracti<strong>on</strong></str<strong>on</strong>g><br />

Proof: Let X , Y s.t. L(X ) = µ, L(Y ) = ν <strong>and</strong><br />

<str<strong>on</strong>g>The</str<strong>on</strong>g>n<br />

E[|X − Y |] ≤ d(µ, ν) + ε.<br />

ℓ1(F (µ), F (ν)) ≤ E[|UX + 1 − (UY + 1)|] = EUE[|X − Y |]<br />

≤ EU(ℓ1(µ, ν) + ε).<br />

Henning Sulzbach J. W. Goethe-Universität Frankfurt a. M. <str<strong>on</strong>g>The</str<strong>on</strong>g> <str<strong>on</strong>g>C<strong>on</strong>tracti<strong>on</strong></str<strong>on</strong>g> <str<strong>on</strong>g>Method</str<strong>on</strong>g> <strong>on</strong> C([0, 1]) <strong>and</strong> D<strong>on</strong>sker’s <str<strong>on</strong>g>The</str<strong>on</strong>g>orem

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