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John von Neumann's Timeline: Life, Photos, and Key Events

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in 1926
on a grant from the Rockefeller Foundation to study mathematics under David Hilbert
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750675
in 1928
in
Berlin
at the University of Berlin
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750679
in 1929
in
Hamburg
at the University of Hamburg
...
750678
in
Baltimore
Princeton University
...
750680
...
750686

in 1947
" I think that it is a relatively good approximation to truth — which is much too complicated to allow anything but approximations — that mathematical ideas originate in empirics."

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750694

in 1947
" But, once they are conceived, the subject begins to live a peculiar life of its own and is … governed by almost entirely aesthetical motivations. In other words, at a great distance from its empirical source, or after much "abstract" inbreeding, a mathematical subject is in danger of degeneration. Whenever this stage is reached the only remedy seems to me to be the rejuvenating return to the source: the reinjection of more or less directly empirical ideas."

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750695


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