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Topic: Formal proof of the ambiguity of 0^0
Replies: 163   Last Post: Nov 13, 2013 10:45 AM

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fom

Posts: 1,968
Registered: 12/4/12
Re: Formal proof of the ambiguity of 0^0
Posted: Oct 18, 2013 1:46 AM
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On 10/18/2013 12:34 AM, Dan Christensen wrote:
> The Case Against 0^0 = 1
>
> Using Theorem 1 (specifying x0=1) , a binary function ^ on N can be constructed such that:
>
> 1. x^0=1
> 2. x^(y+1) = x^y * x
>
> Using this a definition, the usual Laws of Exponents can be derived:
>
> 1. The Product of Powers Rule: x^y * x^z = x^(y+z)
> 2. The Power of a Power Rule: (x^y)^z = x^(y*z)
> 3. The Power of a Product Rule: (x*y)^z = x^z * y^z
>
> However, using Theorem 1 (specifying x0=0 instead) , another binary function ^ on N can also be constructed such that:
>
> 1. 0^0=0
> 2. x^0=1 for x=/=0
> 3. x^(y+1) = x^y * x
>
> The two functions are almost identical, differing only on the value of 0^0 itself (see Theorem 2).
>
> How to choose? For the obvious reasons, 0^0=1 is much more convenient. But the fact is, there does not seem to be any logically compelling reason to choose either alternative. The only real alternative seems to be to leave 0^0 undefined.
>


Again, you cannot do that. These are "total functions".

You have modal possibilities, or, dump 0.

Those are your choices (dump 0 = undefined)





Date Subject Author
10/16/13
Read Formal proof of the ambiguity of 0^0
Dan Christensen
10/16/13
Read Re: Formal proof of the ambiguity of 0^0
Brian Q. Hutchings
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
ross.finlayson@gmail.com
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Robin Chapman
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
fom
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Brian Q. Hutchings
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Ben Bacarisse
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Robin Chapman
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Brian Q. Hutchings
10/17/13
Read Re: Formal proof of the ambiguity of 0^0
Brian Q. Hutchings
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Robin Chapman
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/23/13
Read Re: Formal proof of the ambiguity of 0^0
Shmuel (Seymour J.) Metz
10/25/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/29/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Robin Chapman
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Richard Tobin
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
fom
10/31/13
Read Re: Formal proof of the ambiguity of 0^0
David Bernier
10/31/13
Read Re: Formal proof of the ambiguity of 0^0
David Bernier
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/31/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/31/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/31/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/31/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/31/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
JT
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Brian Q. Hutchings
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Brian Q. Hutchings
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
JT
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
JT
10/30/13
Read Re: Formal proof of the ambiguity of 0^0
JT
10/30/13
Read what is 0^0 in complex. quaternion & octonion units, again
Brian Q. Hutchings
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Robin Chapman
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
fom
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
fom
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/18/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Michael F. Stemper
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/23/13
Read Re: Formal proof of the ambiguity of 0^0
Brian Q. Hutchings
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
fom
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
JT
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
JT
10/21/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Peter Percival
10/20/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/23/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
10/23/13
Read Re: Formal proof of the ambiguity of 0^0
fom
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
fom
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/1/13
Read base-one accounting (just day, Duh, thank you
Brian Q. Hutchings
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Brian Q. Hutchings
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Robin Chapman
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
ross.finlayson@gmail.com
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
ross.finlayson@gmail.com
11/3/13
Read 0^0
Brian Q. Hutchings
11/1/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/12/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/12/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/12/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/12/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/13/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/13/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Virgil
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Paul
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
Bart Goddard
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Ki Song
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Virgil
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Michael F. Stemper
11/2/13
Read Re: Formal proof of the ambiguity of 0^0
Virgil
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
Michael F. Stemper
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
Robin Chapman
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
fom
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
Jussi Piitulainen
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
fom
11/4/13
Read Re: Formal proof of the ambiguity of 0^0
Jussi Piitulainen
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
JT
11/3/13
Read Re: Formal proof of the ambiguity of 0^0
JT
11/12/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen
11/13/13
Read Re: Formal proof of the ambiguity of 0^0
Dan Christensen

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