On Sat, Mar 3, 2018 at 7:33 AM Norman Gray <norman@a...>

Actually no, and thankfully the Wikipedia page gets this right. Integers and reals are both of cardinality Aleph naught. The easiest way to conceptualize this equivalence is to think of them both as being mappable to a set of points on a line.  The set of solutions to all polynomials is traditionally considered not to be of Aleph naught, (one can think of this as being some what multidimensional). However, I have recently seen some arguments to the contrary, though I have not spent the time to dig into them.

Peter Hunsberger