but it is. something is infinite if it is not finite. i agree that infinity is not well defined, it is contextual, in the same way as there are different kinds of multiplication operations on different groups
Shortly speaking, you don't know what are you talking about when you use concepts like infinite or infinity in your system.
i don't think you understand what we mean by anything in mathematics
Cantor, Dedekind, and each one of you as professional mathematician who continue to use their conceptual mistake about the infinite or infinity (by forcing infinitely many elements or intersections of R set on oo) have no reasonable model to talk about.
what does that sentence mean? force infinitely many elements onto something? intersections of R set on oo? they don't make sense.
By forcing infinitely many elements or intersections of R set on oo all you get is a circular and closed system that running after its own tail, therefore prove meaningless proofs when researching infinite or infinity concepts.
And the reason is very simple:
You are not aware to the limits of your system.
And Matt stop telling me about the difference between infinity and infinite, because in both cases a mapping between infinitely many elements is used by standard Math, see for your self:
http://mathworld.wolfram.com/Infinite.html
http://mathworld.wolfram.com/Infinity.html
Don't try to tell me that what is written in Wolfram is wrong, because
I'll send you immediately to the philosophy forum.
Another "great" example of infinity by standard Math can be found here:
http://mathworld.wolfram.com/PointatInfinity.html [/B]
why must wolfram be correct? infinity as they have it is a useful notion that encapsulates the idea of being 'not finite' and perhaps it isn't they who are wrong but you who does not understand what is writte there?
you are the one misusing (mathematical) language and saying infinity is a set of some kind or is {__}.
think for a second and define multiplication. see? probably not.
the symbol infinity is used in a variety of ways, the point at infininty of the Riemann sphere, the sum from 1 to infinity and so on. they all have the common thread of denoting 'not finite', or 'at no finite point'. Why do you insist that there is this ACTUAL INFINITY out there? what is it? please, define it clearly. if you are going to use {__} again try and define that becuase you have not produced a defintion that anyone has accepted or understood.
look on the websites you list. show me where
"mapping between infinitely many elements is used"
is written, or anything approaching it. are you trying to use the idea that a set is infinite iff it is in bijection with a proper subset of itselt? but that doesn't tell you what infinity is does it? people abuse language by saying 'there are an infinity' of real numbers, but the key here is that it is a phrase 'infinity of', and it means that there are an infinite number of, it doesn't mean infinity is a set in the way you think it is.