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ShadmiDoron
September 11, 2006, 10:45 AM
The standard Set/Member relation is based on a xor connective.

For example: Any given x is a member xor not a member of set A and there is no intermediate state.

Fuzzy logic expands standard membership (0 xor 1) by using x, which defines the degree of a membership between 0 and 1 (0 or 1 are included too).

If 0<x<1, and [0,x] belongs to set A then (x,1] does not belong to set A ( [0,x] xor (x,1] )

So, in both cases a xor connective is used as the logical basis of the Set/Member relations.

0, 1, [0,x] or (x,1] (where 0<x<1) are all local mathematical objects because we can clearly define their locality (they are "in" xor "out" of some mathematical object).

An object that is not a set but can be a member of a set, is called an urelemnt (http://72.14.221.104/search?q=cache:JRO16vlJWNQJ:en.wikipedia.org/wiki/Urelement+urelement&hl=en&ct=clnk&cd=1 ).

A sub-object is a part of an object.

Since an urelement is not a set, it does include any sub-object as a part of it, or in other words, it is an atomic singleton.

x is a urelement.

If x is a member and not a member of A then x is a non-local mathematical object.

The best way to notate this is: _{_} , where __ is a urelement.

__ can be a local ( {__} xor __{ } ) or a non-local ( _{_} ) urelement.

If we wish to find the best way to notate a local urelement (a local atomic singleton) than we use . (a point).

An example: {.} xor .{ }

In the standard Set/Member relations each member is a sub-object xor not a sub-object of a set, and both the empty and any a non-empty set are defined by the ways that these sub-objects belongs xor don't belong to them.

Since . and __ are atomic singletons, they are not defined by each other (they are mutually independent exactly like two axioms) and we can expand the membership concept beyond the Set/Member dependency.

For more details please look at http://www.geocities.com/complementarytheory/TOUM.pdf .

Please reply youe comments.

Thank you,

Doron