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Teoriya Veroyatnostei i ee Primeneniya, 1961, Volume 6, Issue 1, Pages 125–130 (Mi tvp4759)  

Short Communications

Les mesures aléatoires invariantes sur la sphére

V. N. Tutubalin

Moscow
Abstract: Considerons une mesure aléatoire $\mu$ sur la sphere $S$. On appelle la mesure $\mu$ invariante, si
$$\mathbf M\mu(A)\mu(B)=\mathbf M\mu(gA)\overline{\mu(gB)}$$
pour toute rotation $g$ de la sphére.
On a demontré la formule suivante:
$$\mu(A)=\sum\limits_{m=0}^\infty{\sum\limits_{l=-m}^m\xi_m^l\int_S\overline{Y_m^l(x)}I_A (x)\,dx,}$$
ou $\xi_m^l$ sont les variables aléatoires, $\mathbf M\xi_m^l\xi_{m_1}^{l_1}=0$, si $l\ne l_1$ ou $m\ne m_1$,
$$\mathbf M\bigl|\xi _m^{- m}\bigr|^2=\mathbf M\bigl|\xi _m^{- m+1}\bigr|^2=\cdots=\mathbf M\bigl|\xi _m^m\bigr|^2=a_m,\quad 0\leq a_m\leq c<\infty,$$
$Y_m^l(x)$ sont les fonctions sphériques:
$$ I_A (x)=\left\{{
\begin{array}{*{20}c}{0,x\notin A,}\\{1,x\in A;}\\\end{array}
}\right.$$
$x$ est un élém ent d'aire.
Received: 29.12.1959
English version:
Theory of Probability and its Applications, 1961, Volume 6, Issue 1, Pages 113–117
DOI: https://doi.org/10.1137/1106015
Document Type: Article
Language: Russian
Citation: V. N. Tutubalin, “Les mesures aléatoires invariantes sur la sphére”, Teor. Veroyatnost. i Primenen., 6:1 (1961), 125–130; Theory Probab. Appl., 6:1 (1961), 113–117
Citation in format AMSBIB
\Bibitem{Tut61}
\by V.~N.~Tutubalin
\paper Les mesures al\'eatoires invariantes sur la sph\'ere
\jour Teor. Veroyatnost. i Primenen.
\yr 1961
\vol 6
\issue 1
\pages 125--130
\mathnet{http://mi.mathnet.ru/tvp4759}
\transl
\jour Theory Probab. Appl.
\yr 1961
\vol 6
\issue 1
\pages 113--117
\crossref{https://doi.org/10.1137/1106015}
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