Used in many context, infinity can have many meanings. The sequence of natural numbers, 1, 2, 3, ..., is said to be infinite. In geometry, the number of points on a line is said to be infinite. Time is often assumed to be infinite, in the sense that it had no beginning, or will have no end, or both. Space is often assumed to be infinite in extent. Infinity is not bound by the basic rules and axioms of math and can destroy logic in arithmetic.
Introduction to infinity including the origins of the sign for infinity and pictures.
Article about infinity. Talks about potential infinity and actual infinity.
Looks at the 3 different contexts and says for each whether infinity exists in each one and why. Links to other essay on the same site on infinity.
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