Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Re: It is a very bad idea and nothing less than stupid to define 1/3
= 0.333...

Replies: 42   Last Post: Oct 9, 2017 11:53 AM

 Messages: [ Previous | Next ]
 Jim Burns Posts: 831 Registered: 9/26/15
Re: It is a very bad idea and nothing less than stupid to define 1/3
= 0.333...

Posted: Oct 3, 2017 7:29 PM

On 10/3/2017 3:25 PM, netzweltler wrote:
> Am Dienstag, 3. Oktober 2017 16:20:25 UTC+2
> schrieb Jim Burns:

>> On 10/3/2017 3:21 AM, netzweltler wrote:
>>> Am Dienstag, 3. Oktober 2017 03:22:11 UTC+2
>>> schrieb Jim Burns:

>>>> On 10/2/2017 2:47 PM, netzweltler wrote:
>>>>> Am Montag, 2. Oktober 2017 20:35:56 UTC+2
>>>>> schrieb Jim Burns:

>>>>>> On 10/2/2017 1:58 PM, netzweltler wrote:
>>>>>>> Am Montag, 2. Oktober 2017 17:59:21 UTC+2
>>>>>>> schrieb Jim Burns:

>>>>>>>> On 10/1/2017 3:22 AM, netzweltler wrote:

>>>>>>>>> Do you agree that 0.999... means infinitely many
>>>>>>>>> commands
>>>>>>>>> ...?

>>>>>>>>
>>>>>>>> 0.999... does not mean infinitely many commands.

>>>>>>>
>>>>>>> But that's exactly what it means.

>>>>>>
>>>>>> That's not the standard meaning.

>>>>>
>>>>> So, you disagree that
>>>>> 0.999... = 0.9 + 0.09 + 0.009 + ... ?

>>>>
>>>> Your '...' is not usable. If we say what we _really_ mean,
>>>> in a manner clear enough to reason about, then the '...'
>>>> disappears. Also, what we are left with are finitely many
>>>> statements of finite length. You will not find infinitely
>>>> many commands in those finitely-many, finite-length
>>>> statements.

[...]

>>> Sorry, no. The meaning of "..." is absolutely clear in this
>>> context and

>>
>> Is it clear to you? Really?
>>
>> I ask because the basis for your whole complaint, in many
>> threads, is that '...' means "infinitely many commands" in
>> some way but then you're all "Whoa! that makes no sense, guys".
>> It does not look to me as though _what you think_ '...'
>> means in this context is at all clear _to you_ .
>>
>> ( _What you think_ it means is not what it means. This is
>> _my_ point.)

>
> Sorry, I don't get what you are trying to teach me.

Do you understand our first exchange? I'm not asking if you
_agree_ with me. Do you _understand_ me?

<Burns<netzweltler>>

> Do you agree that 0.999... means infinitely many
> commands
> ...?

0.999... does not mean infinitely many commands.

</Burns<netzweltler>>

Date Subject Author
10/2/17 Guest
10/2/17 netzweltler
10/2/17 Jim Burns
10/3/17 netzweltler
10/3/17 FromTheRafters
10/3/17 Jim Burns
10/3/17 FromTheRafters
10/3/17 Jim Burns
10/3/17 FromTheRafters
10/3/17 netzweltler
10/3/17 bursejan@gmail.com
10/4/17 netzweltler
10/3/17 FromTheRafters
10/3/17 Jim Burns
10/3/17 FromTheRafters
10/3/17 netzweltler
10/3/17 Jim Burns
10/4/17 netzweltler
10/4/17 Jim Burns
10/4/17 netzweltler
10/5/17 Jim Burns
10/5/17 netzweltler
10/5/17 Jim Burns
10/5/17 netzweltler
10/5/17 Jim Burns
10/5/17 netzweltler
10/5/17 Jim Burns
10/5/17 FromTheRafters
10/6/17 netzweltler
10/6/17 Jim Burns
10/7/17 FromTheRafters
10/8/17 FromTheRafters
10/8/17 netzweltler
10/8/17 Jim Burns
10/8/17 netzweltler
10/8/17 Jim Burns
10/9/17 netzweltler
10/9/17 Jim Burns
10/9/17 netzweltler
10/9/17 Jim Burns
10/7/17 Jim Burns