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ith ( sllfficientl ys ma ll' iii] T(M )isperiodi e ili ki n theperîodiccase. hl T ia a cont rae tion ,
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K + l) ~h··K.K + l )l lll o1 l l ::: (DD"'( ; !I ol W Let us nOWa pply the var iation of const a nt. fo rmul a and ",pply Lcmma 7. We get : b)l':xponential n a bilily: For IUIY rwc 5Olutioo, (I. il l ) ol SM " re m&i nin l': in S o. .... e hav e uni formly in K I(K)::: " s T IK + 11 ,
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Ivar EKELAND Vu et permis d'imprimer Le Président de l'Université de PARIS IX DAUPHINE Vu: les suffragants Mr ,