??? ??????
?????	? ?????? ???? ????? , ??????
?????	?? ???????? ???? (?? ???) Paris, ??????
?????	??????
????? ????	Ecole Normale Superieure
???????? ????	Hadamard product
???? ?????
?????? ???????	C. Emile Picard
????? ??????????	Maurice Rene Frechet

??? ?????? ( ?????????? : Jacques Hadamard ) ????????? ????? ??????? . ? ?????? ???? ????????? ??????? ??? ????. ??  ??? ???? ???????? ? ?? ??????? ???? ?????? ????????? ???? ?????.

?????????? [ ???????? ]

?????????? ??????????????? ????????? ??????? ????????≪ Jacques Hadamard ≫? ??????????? ????????????.( ? ??????? ???? ????????? ??????????????).

?????? ?????????? ??? ?????? ???? ???? ????? ???????? ?????????????.

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