A. Euclid
B. George cantor
C. Albert Einstein
D. None of these
Submitted by: Laraib
Set theory, as a separate mathematical discipline, begins in the work of Georg Cantor. One might say that set theory was born in late 1873, when he made the amazing discovery that the linear continuum, that is, the real line, is not countable, meaning that its points cannot be counted using the natural numbers.