翻訳と辞書
Words near each other
・ Splash Gold (Natsu no Kiseki)/Prism of Eyes
・ Splash guard
・ Splash in the Boro
・ Splash Island
・ Splash Island (water park)
・ Splash Kingdom
・ Splash Kingdom Waterpark
・ Splash Lagoon
・ Splash Lite
・ Splash Media Group LLC
・ Splash Moraine
・ Splash Mountain
・ Splash of color
・ Spitzer resistivity
・ Spitzer Space Telescope
Spitzer's formula
・ Spitzerberg Airport
・ Spitzharfe
・ Spitzhorli
・ Spitzhorn
・ Spitzingsee
・ Spitzkoppe
・ Spitzkunnersdorfer Bach
・ Spitzmeilen
・ Spitzstein
・ Spiv
・ Spivak
・ Spivak pronoun
・ Spivey
・ Spivey Building


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Spitzer's formula : ウィキペディア英語版
Spitzer's formula
In probability theory, Spitzer's formula or Spitzer's identity gives the joint distribution of partial sums and maximal partial sums of a collection of random variables. The result was first published by Frank Spitzer in 1956. The formula is regarded as "a stepping stone in the theory of sums of independent random variables".
==Statement of theorem==

Let ''X''1, ''X''2, ... be independent and identically distributed random variables and define the partial sums ''S''''n'' = ''X''1 + ''X''2 + ... + ''X''''n''. Define ''R''''n'' = max(0,''S''1,''S''2,...,''S''''n''). Then〔
::\sum_^\infty \phi_n(\alpha,\beta)t^n = \exp \left(\sum_^\infty \frac \left( u_n (\alpha) + v_n(\beta) -1 \right) \right )
where
::\begin
\phi_n(\alpha,\beta) &= \operatorname E(\exp\left(i(\alpha R_n + \beta(R_n-S_n)\right ))\\
u_n(\alpha) &= \operatorname E(\exp \left(S_n^+\right )) \\
v_n(\beta) &= \operatorname E(\exp \left(\beta S_n^-\right ))
\end
and ''S''± denotes (|''S''| ± ''S'')/2.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Spitzer's formula」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.