In the late
1880s Georg Cantor arrived at a theory of infinite sets leading to the
notion that the infinite has hierarchical structure. It was somewhat difficult for
others to understand at the time. Cantor himself wrote of it in an 1877 letter to
Dedekind "Je le vois, mais je ne le crois pas!" Evidently,
Kronecker neither saw nor believed — the mathematical giant
denounced Cantor at every opportunity. Cantor's work culminated
in what became known as the Continuum Hypothesis (CH), which sufficiently
impressed Hilbert that he gave it first among his famous 23 problems. The
CH matter was settled by latter-day giants Gödel and Cohen —
they proved it was undecideable. Despite his fundamental contributions
to set theory, Cantor's life sadly ended in a mental institution. In this talk
we'll take a tour of Cantor's transfinite world and explore some of its implications.
If you're looking for applications, this talk is not likely for you.