Is 1 bigger than 0.999... ?

作者:Mir  于 2009-3-5 00:23 发表于 最热闹的华人社交网络--贝壳村

通用分类:其它日志|已有21评论

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Is 1 bigger than 0.9999..... ? This question is as important as Goldbach Conjecture.

If 1 is bigger than 0.999..., then what is their difference? Is it 0.1, or 0.01, or 0.001, or 0.0001?

No. The difference between 1 and 0.999.... is smaller than all of these. Acutually the difference is smaller than any positive numbers. That is, 1 is not any bigger than 0.999... by any difference you can think of. Therefore, 1 is not any bigger than 0.999....

Since 1 is not smaller  than 0.9999... either, 1 then equals 0.999....

That is not the direct prove that 1 equals 0.999... though, here is the prove.

Let                            0.9999.…..= X                   (1)

Multiple both sides by 10:     9.9999.….= 10X                  (2)

(2) - (1):                             9 = 9X

Hence                                  X = 1

Therefore                      0.99999.…… = 1

This is Mir Conjecture.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the permission of the copyright holder, who is Mir.
 
PS: I can not type Chinese but love to read Chinese, the only language I can really understand. So please, no English, if you do not have to.
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发表评论 评论 (21 个评论)

1 回复 marnifan 2009-3-5 05:02
0.9999999999999999..............................还是不等于 1.
回复 Mir 2009-3-5 05:21
marnifan: 0.9999999999999999..............................还是不等于 1.
Do you belive my logic though?
I proved something which is obviously wrong. Pure skill.
回复 marnifan 2009-3-5 05:29
Mir: Do you belive my logic though?
I proved something which is obviously wrong. Pure skill.
额, 咱逻辑不好, 没懂.
1 回复 Mir 2009-3-5 05:39
marnifan: 额, 咱逻辑不好, 没懂.
I though my article is stright forward. My failure. No wonder, no body said anything.
回复 Mir 2009-3-5 06:03
marnifan: 额, 咱逻辑不好, 没懂.
You do not understand my logic, but understand my humor better than others. That is comforting. I do not understand why we can not really laugh off things.
回复 rtc4rtc 2009-3-7 03:07
悖论。小数点后有无穷多个9,所以(2)-(1)的算式得出9=9X的结果已经错了,所以最后的结果是错的。所以0.99999...<>1
回复 Mir 2009-3-7 03:12
rtc4rtc: 悖论。小数点后有无穷多个9,所以(2)-(1)的算式得出9=9X的结果已经错了,所以最后的结果是错的。所以0.99999...<>1
This is a real bite.

Infinite does not equal infinite, does it?
回复 练精化气AAA 2009-3-7 03:20
回你这个帖 算是做了违背原则的一件事情  本来绝不在论坛来谈科学

算了吧 就一回

1 和 0。9999。。。的比较  你的定义不清楚

如果 是在 有理数集合  1>0。999。。

如果是在实数集合 本来 1。0就可以表示为 0。9+0。09+0。009+0。0009+。。。。。

以上数列 的和最后是收敛 到 1。0的

具体证明  自己去看书
回复 Mir 2009-3-7 03:31
练精化气AAA: 回你这个帖 算是做了违背原则的一件事情  本来绝不在论坛来谈科学

算了吧 就一回

1 和 0。9999。。。的比较  你的定义不清楚

如果 是在 有理数集合
You are right.

It is simply the sum of infinite convergent geometric sequence.

It is not really a science paper here. I just want to make something interesting. You can do it again.
回复 rtc4rtc 2009-3-7 03:34
Mir: This is a real bite.

Infinite does not equal infinite, does it?
问题出在:9.999...-0.999...不可能得出9的结果。
1 回复 Mir 2009-3-7 03:40
rtc4rtc: 问题出在:9.999...-0.999...不可能得出9的结果。
That is right. It is  deceving. Obviously, not to you.
Thanks.
回复 rtc4rtc 2009-3-7 03:48
Mir: That is right. It is a deceving. Obviously, not to you.
Thanks.
多谢!
1 回复 已夜 2009-3-7 06:10
练精化气AAA: 回你这个帖 算是做了违背原则的一件事情  本来绝不在论坛来谈科学

算了吧 就一回

1 和 0。9999。。。的比较  你的定义不清楚

如果 是在 有理数集合
您老太厉害了!!!!!
回复 Mir 2009-3-7 06:27
已夜: 您老太厉害了!!!!!
Haha, I like this comment. Very scientific.
回复 已夜 2009-3-7 06:30
Mir: Haha, I like this comment. Very scientific.
恩呢~_~
1 回复 Mir 2009-3-7 06:37
已夜: 恩呢~_~
NNNNNNNNNNN~~~~~~~~~~
Time to wake up.
1 回复 newsound 2009-3-25 12:24
已夜: 您老太厉害了!!!!!
"您老太厉害了!!!!!"
拍得不够响, 应该说“您老太太厉害了!!!!!”
回复 已夜 2009-3-25 15:21
newsound: "您老太厉害了!!!!!"
拍得不够响, 应该说“您老太太厉害了!!!!!”
开玩笑的话,大家嘻嘻哈哈一过,吵架的话您别找我,不感兴趣,没时间。
回复 老糊涂 2009-4-8 10:36
因为
0.9999999.........=0.3333333................x3
0.3333333.........=1/3
所以
0.9999999.........=1/3 x 3 =1
1 回复 marnifan 2009-4-8 10:43
老糊涂: 因为
0.9999999.........=0.3333333................x3
0.3333333.........=1/3
所以
0.9999999.........=1/3 x 3 =1
脑筋急转弯
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