RE: Why, how do you do?
February 12, 2010 at 3:36 pm
(This post was last modified: February 12, 2010 at 3:36 pm by BioLogos.)
(February 12, 2010 at 2:07 pm)Darwinian Wrote: Is infinity really a number or simply a concept dreamed up by mathematicians that has no place in the real world?Infinity is not a "number", but the concept of unboundedness. A set, S, is infinite if and only if |S|>n for any positive integer, n (|S| means the number of members of S) (i.e. the number of members of S is unbounded). Equivalently, infinity is the opposite of finiteness (S is infinite if and only if there does not exist a positive integer, n, such that |S|<n.
Infinity is also an impossible concept to get your head round, which is probably why it's represented by the love knot.
