柯西－施瓦茨大师课：不等式的艺术

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• John von Neumann once said, "In mathematics you don't understand things, you just get used to them". (查看原文)

  ninainaid 2011-05-24 08:54:47

• According to an old (and possibly apocryphal) story, during one of his lectures David Hilbert once wrote a line on the blackboard and said, "It is obvious that...," but then Hilbert paused and thought for a moment. He then became noticably perplexed, and he even left the room, returning only after an awkward passage of time. When Hilbert resumed his lecture, he began by saying "It is obvious that..." (查看原文)

  ninainaid 2011-05-24 08:56:16