aleph-null, aleph-1, logarithms and Richter, elementary number theory, unit fractions, The Art of Counting, twin primes, number roundness, Ramsey Theory, friendly numbers, perfect numbers, Mersenne primes, 4th dimension
relatively prime, partitions, Smith numbers, Ruth-Aaron pairs, combinatorics, The Revolt of the Angels, continuum hypothesis, inaccessible cardinals, Monty Hall dilema
Pythagoras, Newton, Fermat, Gauss, Hilbert, Einstein, Cantor, Gödel, Stanislaw Ulam, Whitehead, Wiles, Poincare, Euler
Aleph-null - Corresponds 1-1 with cardinals
Aleph-one - As reals. Always more decimal places to fill.