jsfisher
ETcorngods survivor
- Joined
- Dec 23, 2005
- Messages
- 24,532
By your reasoning.
By my reasoning X is not a free variable.
Mathematics supports me in this.
By your reasoning.
By my reasoning X is not a free variable.
Indeed your Mathematics supports you in this.Mathematics supports me in this.
Indeed your Mathematics supports you in this.
Since by my mathematics X is not a free variable, X is simply at least two options: X, ~X.
The successor operation is a primitive recursive function S such that S= n+1 for each natural number n. For example, S(1) = 2 and S(2) = 3.
I know it isn't the definition everyone has been waiting on but I thought I'd at least give you troopers something, How you've all kept your sanity is admirable.
The successor operation is a primitive recursive function S such that S= n+1 for each natural number n. For example, S(1) = 2 and S(2) = 3.
Some examples:Yes, that is the conventional one. It comes up in the Peano Axioms for the natural numbers.
John von Neumann modeled the natural numbers in set theory by defining S(X) to be X U {X}. The definition is well chosen because it has useful properties I won't belabor here. In what is now the most widely accepted formalization for set theory (ZFC), von Neumann's successor function is reflected in the Axiom of Infinity. Other versions of the axiom are built on other functions, but the von Neumann function provides a natural foundation to build the natural numbers on top of set theory, that is, the Peano Axioms.
In both models, outer braces are used but not logically addressed.The issue for this thread, though, is Doronshadmi's poorly expressed claim of a deficiency in infinite sets because of The Successor FunctionTM. The one included in ZFC (but not all others) isn't set theory's successor function, per se, but just a very useful tool for the Axiom of Infinity that simplifies the bridge to the natural numbers.
jfisher airs his view about terms even if he does not know what they mean.It does not, in any way, impart features into sets that make them complete or incomplete (whatever that term is supposed to mean).
By not using free variables...
In both models, outer braces are used but not logically addressed.
By your mathematical framework, free variables are used to define truth tables.You denying they are free variables doesn't change the fact they are free variables. Mathematics does not submit to your arbitrary rule changes.
They are used but not logically addressed, therefore your mathematical framework is not entirely logically addressed.In neither model are braces used.
By your mathematical framework, free variables are used to define truth tables.
By my...framework, free variables are not used to define truth tables.
They are used but not logically addressed
Ignoring your improper use of the word, define,
This is the realm of your mathematical framework, which is not entirely logically addressed, exactly because outer braces are not logically addressed (and again, no free variables are need in order to logically address them).Nope. Braces are not a formal part of set theory.
?Take for example T.
It is not a free variable, yet T has at least two options, which are T,~T.
Any binary logical connective between the two options, is defined by at least four rows.
http://www.internationalskeptics.com/forums/showpost.php?p=11362427&postcount=1943 is logically straightforward, and this is exactly what is done in http://www.internationalskeptics.com/forums/showpost.php?p=11363027&postcount=1948 or http://www.internationalskeptics.com/forums/showpost.php?p=11363119&postcount=1953.That's so funny. You do circular definitions, make up words and then can't define them. And then afterwards, claim that you dont need the words you make up.