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GrandMinnow

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No, that set is a member of the power set of the power set of the set of real numbers. And I don't understand the rest of your post, starting with "an...
September 01, 2019 at 06:03
No, your argument is nothing like Cantor's argument. Cantor proved that there does not exist a surjection from the one set onto the other, peforce tha...
September 01, 2019 at 05:53
What is the name and author of the text? The axiom of infinity is not a mathematical object named 'infinity'. Moreover, the axiom of infinity itself i...
September 01, 2019 at 05:37
This post got out of sequence. I put the text in my next post.
September 01, 2019 at 05:18
I wrote "isomorphism" in scare quotes because I don't mean an actual function. I mean that tuples and sequences are "isomorphic" in that you can recov...
September 01, 2019 at 05:09
If you like I can recommend a few textbooks in first order predicate logic and then set theory that would provide you with a self-course in this subje...
September 01, 2019 at 03:03
That's not how we say it. Rather, we say the cardinality of N equals the cardinality of E. card(N) = card(E) The even numbers in N are just the member...
September 01, 2019 at 02:59
This post by TheMadFool was supposed to rolled into this thread: This is a question from an elementary math book: u = u + 1. (i) Find the value of u (...
September 01, 2019 at 02:28
I wouldn't state it that way. If we mean first order Peano arithmetic (PA), then there are not in PA definitions of 'set', 'class', and 'proper class'...
September 01, 2019 at 02:00
There are two different domains of discussion: (1) mathematics itself and (2) philosophy of mathematics. (1) MATHEMATICS ITSELF (There are forms of ma...
September 01, 2019 at 01:52
Did Brouwer describe Hilbert's formal theories as a 'game'? Maybe he did, but I think it was Weyl's mention of a 'game' that Hilbert was most salientl...
August 06, 2019 at 16:45
Without unique readability we wouldn't even have true in one reading and not in another. Without unique readability we wouldn't even have the recursiv...
August 05, 2019 at 19:25
Unique readability affords definition by recursion, and definition by recursion affords the method of models, which provides that every statement has ...
August 05, 2019 at 15:47
Proving unique readability is necessary for proving the definition by recursion theorems. Each formal system will have its own proofs of unique readab...
August 04, 2019 at 03:05
There are different variants of formalism. Only a quite extreme variant holds that mathematics is meaningless, let alone that it is useless.
August 04, 2019 at 01:02
Right, standard analysis does not admit infinitesimals. However, calculus can be formulated in non-standard analysis or in internal set theory, as tho...
August 04, 2019 at 00:55
Yes, it is not a problem in itself to refer to 'games'. If is fair enough to say that Hilbert took mathematics, in a certain regard, as concerned with...
August 04, 2019 at 00:20
I did not claim to address, let alone undermine, your thesis. I set straight certain of the mathematical subjects you mentioned. That is not pedantic....
August 03, 2019 at 23:52
That was not Hilbert's view. It seems you are confusing Hilbert with Russell. That is terribly incorrect. Godel's result is that, for any S that is a ...
July 28, 2019 at 09:35