Is there an infinity of infinities? The question sounds almost absurd, like a riddle designed to twist your brain into knots.

But that also necessitates that there’s technically an infinite number of infinities forming a hierarchy of ever-greater complexity. Scientists and mathematicians have spent decades debating the ...

Scientists and mathematicians have spent decades debating the nature of infinity, and have known for more than a century ... out numbers from other sets. This puts infinities into three categories ...