R is uncountable
19:45
(0,1) vs. the real numbers
38:25
Countability and Uncountability
13:00
Algebraic numbers are countable
6:57
Some Infinities ARE Bigger Than Other Infinities (Diagonalization)
22:48
Cardinality of the Continuum
20:58
journey into fractals: the Cantor set and ternary expansion.
21:19
Approximating Irrational Numbers (Duffin-Schaeffer Conjecture) - Numberphile
22:04