研究数论有什么意义
所有跟贴·加跟贴·新语丝读书论坛
送交者: sybil 于 2007-01-09, 09:11:00:
所有跟贴:
- Number theory and quantum mechanics - 唐好色 (113 bytes) 2007-01-10, 01:12:47 (119563)
- 最近想买一本高斯的「Disquisitiones Arithmeticae」英译本啃一下, - sl (216 bytes) 2007-01-09, 19:08:12 (119520)
- 不是好的教科書 - 唐好色 (104 bytes) 2007-01-10, 01:09:11 (119561)
- 你问这个问题又有什么意义?:) (无内容) - fuzzify (0 bytes) 2007-01-09, 10:50:57 (119434)
- 我觉得它是人造的游戏,而不是描摹世界的努力 - sybil (150 bytes) 2007-01-09, 12:53:17 (119451)
- 数学比较特别,不同于其他学科。 - fuzzify (128 bytes) 2007-01-09, 15:54:53 (119490)
- 白痴!数量关系是这个宇宙的最基本运作关系之一。 (无内容) - xinku (0 bytes) 2007-01-09, 13:21:41 (119456)
- 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)
- 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)
- 在通信里面有很多用途 - 借红灯 (16 bytes) 2007-01-09, 12:57:36 (119452)
- I am sure Mr 何作庥 can provide a good answer. No, just kidding (无内容) - low (0 bytes) 2007-01-09, 09:18:04 (119424)
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