???? [?] [?] [?] [??]
??????? ??? ???? [??]
??? ???? ?????? ?????? ???? ??? ? ????? ??? ?? ????? ??? ??? 28 ????? 1906? ????? ??????-????? ?? ???? ????? ????? ??? ???? ?? ??? ??? ?????? ???? ?? ???? 1931? ?? ????? ??? ??? 25 ??? ?? ?? ?? ?? ?? ????? ????? ??? ???? ???????? ?????? (Godel's incompleteness theorems) ???? ??? ?????
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