Real Infinity+question

Is infinity real?  Depends on what you mean by real and infinity.  The basis for this question is to ask whether there are any actual infinities.  Not just potential ones as in many domains of mathematics, but quantities or durations that are infinite.  This includes anything "infinitely small" that isn't actually nothing (as in ontological non-existence).

From a mathematical standpoint, the real numbers cannot be defined without infinities, which is to say that an actual real number as distinct from the infinite sets of rational numbers infinitesmally close.  In other words, if infinity isn't real, then neither are the irrational reals like π and square_root(2).

None of this is much of a problem unless the mathematics changes significantly when you substitute rational number for real number to acknowledge the unreality of infinity.

We also can consider the question from the standpoint of eternity and timelessness.