送交者: xinku 于 2007-01-09, 13:21:41:

回答: 我觉得它是人造的游戏，而不是描摹世界的努力 由 sybil 于 2007-01-09, 12:53:17:

• 我比你想象的更白痴！因为我不像你一样知道“整数性质”=“数量关系” (无内容) - sybil (0 bytes) 2007-01-09, 14:23:40 (119470)
  • they map to each others. (无内容) - steven (0 bytes) 2007-01-09, 15:33:03 (119486)
    • show us the mapping function then. ：） (无内容) - fuzzify (0 bytes) 2007-01-09, 16:21:19 (119495)
      • Number theory and quantum mechanics - 唐好色 (118 bytes) 2007-01-10, 01:05:40 (119560)
        • Thanks. Glad to learn this stuff from you guys. - fuzzify (107 bytes) 2007-01-10, 11:28:39 (119617)
      • by definition, every element in a countable infinite set has - steven (35 bytes) 2007-01-09, 16:30:22 (119496)
        • is [0,1] countable then? :) (无内容) - fuzzify (0 bytes) 2007-01-09, 16:42:07 (119497)
          • if the set is rational, it is countable. If it is a set of real, it is not. (无内容) - steven (0 bytes) 2007-01-09, 16:43:03 (119498)
            • Exactly. In real world, how can you ignore irrational ones (无内容) - fuzzify (0 bytes) 2007-01-09, 16:49:42 (119500)
              • that's what I was trying to say: there is no 1-1 mapping between - fuzzify (26 bytes) 2007-01-09, 23:41:15 (119554)
              • to be exact, the function should 1-1 or bidirectional. (无内容) - 匆匆过客 (0 bytes) 2007-01-09, 22:35:41 (119551)
              • you already said integers is countable, but real numbers are not. - fuzzify (68 bytes) 2007-01-09, 21:44:44 (119543)
              • typo: the cardinal of Real is Beth one. (无内容) - steven (0 bytes) 2007-01-09, 18:26:28 (119515)
              • The real number, which is called continuum isn't a countable set. - steven (222 bytes) 2007-01-09, 17:58:25 (119510)
              • ok. Anyway, there is no such mapping function between - fuzzify (32 bytes) 2007-01-09, 17:31:01 (119505)
              • then again, in the real world, things are actually quantized. :) - steven (77 bytes) 2007-01-09, 17:10:19 (119503)

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