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Jim__

(15,248 posts)
12. As simply as it can be put, your statement is in direct contradiction to a Zermelo-Fraenkel axiom.
Wed Mar 28, 2012, 11:53 AM
Mar 2012

You know, Zermelo-Fraenkel:

In mathematics, Zermelo–Fraenkel set theory with the axiom of choice, named after mathematicians Ernst Zermelo and Abraham Fraenkel and commonly abbreviated ZFC, is one of several axiomatic systems that were proposed in the early twentieth century to formulate a theory of sets without the paradoxes of naive set theory such as Russell's paradox. Specifically, ZFC does not allow unrestricted comprehension. Today ZFC is the standard form of axiomatic set theory and as such is the most common foundation of mathematics.


From your last post:

But lets suppose instead, my integer is defined as

m = 1+1+1+... (to infinity)

can you add 1 to this infinitely long integer and make it larger? Its value is already infinite. Can you get a larger number with infinity plus 1? No.


You don't understand the mathematical concept of infinity. Yes, you can always add 1 to an integer. The Zermelo-Fraenkel Axiom of Infinity:

Let S(x) abbreviate x ∪ {x}, where x is some set. Then there exists a set X such that the empty set ∅ is a member of X and, whenever a set y is a member of X, then S(y) is also a member of X.

∃ X ( ∅ ∊ X ∧ ∀ y ( y ∊ X => S(y) ∊ X))

Recommendations

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R&K for the first math post I've seen on DU longship Mar 2012 #1
Question for math teacher - Please. At the end of the year I have 100,000 Pesos... wake.up.america Feb 2013 #43
Well, it doesn't come out even. longship Feb 2013 #44
I disagree. Is PI a rational number? napoleon_in_rags Mar 2012 #2
Woot! for critical thinking and logic! TalkingDog Mar 2012 #3
A set of numbers is countable if it has the same cardinality as some subset of the natural numbers. Jim__ Mar 2012 #4
"there do not exist 2 integers, say n and m, such that pi can be written as n/m" napoleon_in_rags Mar 2012 #5
"... you know Z plus all integers of infinite length would probably have the same cardinality as R." Jim__ Mar 2012 #7
+! Hawkowl Mar 2012 #8
I will make it simpler for you. napoleon_in_rags Mar 2012 #9
"God created the integers" one_true_leroy Mar 2012 #10
This is a teachable moment. napoleon_in_rags Mar 2012 #11
A few points... one_true_leroy Mar 2012 #13
Yes, I've always had something of a flirtation with limits... napoleon_in_rags Mar 2012 #15
Had to jump in on this thread... Joseph8th Apr 2012 #22
As simply as it can be put, your statement is in direct contradiction to a Zermelo-Fraenkel axiom. Jim__ Mar 2012 #12
Awwwww hell..... one_true_leroy Mar 2012 #14
HELL yeah! I love it... Joseph8th Apr 2012 #23
Ah, my friend. You have forgotten your transfinite cardinals! napoleon_in_rags Mar 2012 #16
Guess again. Jim__ Mar 2012 #17
So you're saying 1+1+1...infinity is an integer? napoleon_in_rags Mar 2012 #18
The Axiom of Infinity says that 1 + 1 + 1 + 1 ... is an integer. Jim__ Apr 2012 #19
Yeah, it guarantees the size N is infinite, not that any number in N is infinite. napoleon_in_rags Apr 2012 #20
See post #4. Jim__ Apr 2012 #21
Nicely said... and... Joseph8th Apr 2012 #24
Now there's some interesting stuff. napoleon_in_rags Apr 2012 #26
Wellll.... Joseph8th Apr 2012 #27
But then pi's special in its relationship... Joseph8th Apr 2012 #28
Euler's identity tama Apr 2012 #30
Just answer me one question Joseph8th. napoleon_in_rags Apr 2012 #32
You're on an interesting track tama Apr 2012 #33
You're awesome Tama. napoleon_in_rags Apr 2012 #34
Mersenne primes tama Apr 2012 #35
God is Alive, Magic is Afoot. napoleon_in_rags Apr 2012 #36
Category theory tama Apr 2012 #37
I'm just incredibly glad to hear these people seeing the holes in set theory. napoleon_in_rags Apr 2012 #39
Not quite. Dr. Strange Apr 2012 #38
.999... is not equal to 1. napoleon_in_rags Apr 2012 #40
The problem is you can't treat infinity like a real number. Dr. Strange Apr 2012 #41
Agreed, that is the problem, but for both of us. napoleon_in_rags Apr 2012 #42
Not much point tama Apr 2012 #31
Transcendentals are strange tama Mar 2012 #6
Da! Transcendentals are strange... Joseph8th Apr 2012 #25
Deep shit ;) tama Apr 2012 #29
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