From: melsi on
Godels incompleteness theorems are invalid ie illegitimate


It is argued that Godels incompleteness theorems are invalid ie illegitimate for 5 reasons: he uses the axiom of reducibility- which is invalid ie illegitimate,he constructs impredicative statement which is invalid ie illegitimate ,he cant tell us what makes a mathematic statement true, he falls into two self-contradictions,he ends in three paradoxes

http://www.scribd.com/doc/32970323/Godels-incompleteness-theorem-invalid-illegitimate

First of the two self-contradictions

Godels first theorem ends in paradox –due to his construction of impredicative statement
Now the syntactic version of Godels first completeness theorem reads

Proposition VI: To every ω-consistent recursive class c of formulae there correspond recursive class-signs r, such that neither v Gen r nor Neg (v Gen r) belongs to Flg(c) (where v is the free variable of r).

But when this is put into plain words we get
http://en.wikipedia.org/wiki/G%C3%B6del ... ss_theorem

Gödel's first incompleteness theorem states that:
Any effectively generated theory capable of expressing elementary arithmetic cannot be both consistent and complete. In particular, for any consistent, effectively generated formal theory that proves certain basic arithmetic truths, there is an arithmetical statement that is true,[1] but not provable in the theory (Kleene 1967, p. 250).

Now truth in mathematics was considered to be if a statement can be proven then it is true
Ie truth is equated with provability
http://en.wikipedia.org/wiki/Truth#Truth_in_mathematics

”…from at least the time of Hilbert's program at the turn of the twentieth century to the proof of Gödel's theorem and the development of the Church-Turing thesis in the early part of that century, true statements in mathematics were generally assumed to be those statements which are provable in a formal axiomatic system.
The works of Kurt Gödel, Alan Turing, and others shook this assumption, with the development of statements that are true but cannot be proven within the system”

http://en.wikipedia.org/wiki/G%C3%B6del ... ss_theorem
“Any effectively generated theory capable of expressing elementary arithmetic cannot be both consistent and complete. In particular, for any consistent, effectively generated formal theory that proves certain basic arithmetic truths, there is an arithmetical statement that is true,[1] but not provable in the theory (Kleene 1967, p. 250)
For each consistent formal theory T having the required small amount of number theory
… provability-within-the-theory-T is not the same as truth; the theory T is incomplete.”

Now it is said godel PROVED
"there are true mathematical statements which cant be proven"
in other words
truth does not equate with proof.

if that theorem is true
then his theorem is false

PROOF
for if the theorem is true
then truth does equate with proof- as he has given proof of a true statement
but his theorem says
truth does not equate with proof.
thus a paradox
THIS WHAT COMES OF USING IMPREDICATIVE STATEMENTS




GODEL CAN NOT TELL US WHAT MAKES A STATEMENT TRUE

GODEL CAN NOT TELL US WHAT MAKES A STATEMENT TRUE
Now truth in mathematics was considered to be if a statement can be proven then it is true
Ie truth was s equated with provability
http://en.wikipedia.org/wiki/Truth#Truth_in_mathematics


”…from at least the time of Hilbert's program at the turn of the twentieth century to the proof of Gödel's theorem and the development of the Church-Turing thesis in the early part of that century, true statements in mathematics were generally assumed to be those statements which are provable in a formal axiomatic system.

The works of Kurt Gödel, Alan Turing, and others shook this assumption, with the development of statements that are true but cannot be proven within the system”

Now the syntactic version of Godels first completeness theorem reads
Proposition VI: To every ω-consistent recursive class c of formulae there correspond recursive class-signs r, such that neither v Gen r nor Neg (v Gen r) belongs to Flg(c) (where v is the free variable of r).

But when this is put into plain words we get

http://en.wikipedia.org/wiki/G%C3%B6del ... ss_theorem
“Any effectively generated theory capable of expressing elementary arithmetic cannot be both consistent and complete. In particular, for any consistent, effectively generated formal theory that proves certain basic arithmetic truths, there is an arithmetical statement that is true,[1] but not provable in the theory (Kleene 1967, p. 250)

For each consistent formal theory T having the required small amount of number theory
… provability-within-the-theory-T is not the same as truth; the theory T is incomplete.”

In other words there are true mathematical statements which cant be proven
But the fact is Godel cant tell us what makes a mathematical statement true thus his theorem is meaningless
Ie if Godels theorem said there were gibbly statements that cant be proven


But if godel cant tell us what a gibbly statement was then we would say his theorem was meaningless


Now at the time godel wrote his theorem he had no idea of what truth was as peter smith the Cambridge expert on Godel admitts

http://groups.google.com/group/sci.logi ... 12ee69f0a8

Quote:
Gödel didn't rely on the notion
of truth

but truth is central to his theorem
as peter smith kindly tellls us

http://assets.cambridge.org/97805218...40_excerpt.pdf
Quote:
Godel did is find a general method that enabled him to take any theory T
strong enough to capture a modest amount of basic arithmetic and
construct a corresponding arithmetical sentence GT which encodes the claim 'The sentence GT itself is unprovable in theory T'. So G T is true if and only
if T can't prove it

If we can locate GT

, a Godel sentence for our favourite nicely ax-
iomatized theory of arithmetic T, and can argue that G T is
true-but-unprovable,

and godels theorem is

http://en.wikipedia.org/wiki/G%C3%B6...s_theorems#Fir...
Quote:
Gödel's first incompleteness theorem, perhaps the single most celebrated result in mathematical logic, states that:

For any consistent formal, recursively enumerable theory that proves basic arithmetical truths, an arithmetical statement that is true, but not provable in the theory, can be constructed.1 That is, any effectively generated theory capable of expressing elementary arithmetic cannot be both consistent and complete.

you see godel referes to true statement
but Gödel didn't rely on the notion
of truth

now because Gödel didn't rely on the notion
of truth he cant tell us what true statements are
thus his theorem is meaningless