Sometimes in mathematics it is grueling work to making clear what it
is you understand. You know something and understand it, but have
still a lot of roughness and patches of fog. Some of it is because
there is still a lot to learn about a topic even though we know it and
understand it. Perhaps it is that we understand it in large degree,
but still have smaller degrees of learning more.
In the case of Cantor's diagonal argument for larger infinities, I
know he was wrong and mistaken and can prove it. But I can still make
improvements on clarity.
What prompted me into writing this post is a admonition by LWalk
yesterday who said words to the effect "make it as clear as possible
and let others then judge whether they get enough information to be
persuaded by the argument". And so I still have room for improvement
on making the case against Cantor more clear.
Plus, also, I see a thread going in sci.math asking whether any peer
reviewed math journal raises the issue of the falsity of Cantor's
diagonal argument.
So let me improve on clarity of why Cantor was wrong. And let me start
with the Probability theory of counting of a true false test with a
number of questions. It is called the Fundamental Counting Principle
so that a true false test of 2 questions has 4 possible cases TT, TF,
FT, and FF. For 3 questions it is 2^3 = 8 for 4 questions it is 2^4 =
16.
Now Cantor and every other mathematician since Cantor would not argue
the idea that the Reals are all-possible-digit-arrangements. And we
focus only on the Reals between 0 and 1 such as the Real 0.11100000..
or the Real 0.01010101..
And Cantor and all subsequent mathematicians would not argue against
the idea of making the Reals from 0 to 1 in binary base rather than in
decimal base representation. So that the list of all Reals from 0 to 1
has only the two digits of either 0 or 1.
Now, to make the proof that Cantor was wrong, the easiest way possible
is to show an example and then to expand on that example.
So the example is All Reals of two digits and two place values
so that we have .00 and .01 and .10 and .11 as the total universe of 2
digits to 2 place value. Now of course Cantor did not restrict himself
to just 2 digits and 2 place value, but we can expand that. And if we
collect a missing Real in 2 digits and 2 place value, we can then
agree that Cantor was true, but if we cannot collect a Real not on the
list in 2 digits and 2 place value, we have to begin to worry that
Cantor's proof was a fake and we have to see how Cantor may have been
lead astray.
So for 2 digits in 2 place value the Fundamental Counting Principle
tells us there are 2^2 = 4 total possible cases or, in our problem 4
Reals in all possible digit arrangement and they are
00
10
01
11
where I have deleted the decimal point and well do so in the rest of
this post, for we all know they are Reals between 0 and 1.
Now, immediately we can see a problem for which Cantor never addressed
and which Cantor likely failed and made a fake proof.
The problem is that I have listed all the Reals for 2 digits and 2
place value but I cannot arrange them in a geometry to where the
diagonal performs a Cantor Diagonal to manufacture a new Real not on
the list.
Let me show you:
I can take two of those Reals and perform a Cantor diagonal, and say I
take 00 and 01
I make a Cantor list as such:
00
01
And the diagonal is 45 degrees cutting into 0 in the top row
and the 1 in the bottom row.
Now according to Cantor's proof argument in the 1800s, he altered the
0 to be 1 in the top row and then he altered the 1 to be 0 in the
bottom row and thus Cantor manufactured the number 10.
Now is it a new and missing Real, this 10? Why yes of course when you
list only 00 and 01 where you can perform a geometry diagonal.
But that would be a menacing flaw of Cantor's proof, because he cannot
list all the Reals of 2 digits to 2 place value and have a working
diagonal that alters every Real on the list.
There is no geometrical means of listing all the 4 Reals that belong
to 2 digits to 2 place value
Could Cantor make some geometrical list of
00
01
10
11
and have a diagonal or something else that alters all those 4 Reals
and produces a new missing Real.
It is late at night here and I have not gone to bed yet, but had a
shower and I for the life of me see no way possible of making a
geometrical arrangement that alters every one of those 4 Reals and
manufactures a new Real.
As shown above, if we deleted 10 and 11 and work with only
00 and 01 we manufacture the Cantor method we manufacture the Real 10
and it is different from 00 and 01 but it is not different from any of
the 4 Reals that should have been listed.
So here we begin to see the huge major flaw of Cantor and why his
proof is not true but a fake.
Cantor assumed he could list all the Reals and apply a diagonal on all
those Reals. In the case of just all the Reals of 2 digits to 2 place
value, no geometry exists that can form a list where the diagonal
works on all those Reals. In the case of 2 digits to 3 place values we
have 2^3 =8 total Reals possible represented as this:
000
001
010
100
110
101
011
111
Now we ask Cantor to take that list of all possible Reals with 2
digits and 3 place value and to come up with some geometry
configuration of where he can apply his diagonal and produce a Real
number that is different from those 8 listed Reals. And the answer is
impossible.
Cantor can take three of them and do a diagonal
000
010
111
and by doing the diagonal, Cantor will have manufactured the number
100 and that number is not on the list, but it is on the list of all
Reals and it is not on the list of the diagonal because the geometry
forbids it to be on the list.
So here we begin to see the huge internal flaw of Cantor's argument.
Cantor made a large list with alot of dots indicating large numbers
like this:
0000000000000000000000000......
0101010101010111010101010......
0000000000011000000000000......
0101010101110101010101010......
0000000000001110000000000......
0101010101010101011101010......
0111000000000000000000000......
0101011111010101010101010......
.
.
.
.
.
In other words Cantor made his list look large and full of
dots to indicate it was even larger than what it looks and he
did this because when you then draw that diagonal and presume
you have all the Reals on that list that the diagonal will deliver you
a new missing number.
But in fact, as the case of 2 digits 2 place value or 2 digits 3 place
value or 2 digits, infinity place value shows us by math induction,
that in every such case example, the only way to manufacture a missing
Real is because the diagonal cannot accommodate all the Reals that had
to be listed.
So the flaw of Cantor diagonal is that he applied geometry and
diagonal when such an application was never warranted.
Now maybe some place value such as perhaps 2 digits to the 100 place
value will allow a geometry with a 45 degree diagonal to cover all the
Reals that have to be covered takes place? But the answer to that is
negative, because as the place value gets larger, the number of Reals
produced gets exponentially larger.
So, the major flaw of Cantor is that he could never list all the Reals
and cut them by a diagonal to produce a new missing Real.
Archimedes Plutonium
http://www.iw.net/~a_plutonium
whole entire Universe is just one big atom
where dots of the electron-dot-cloud
are galaxies