infinity symbol hilbert's paradox of the grand hotel aleph number irresistible force paradox cantor's diagonal argument countable set continuum hypothesis apeirogon uncountable set ad infinitum infinity mirror extended real number line cardinality of the continuum heh (god) absolute infinite actual infinity nonstandard analysis beth number infinity plus one ultrafinitism point at infinity infinity (philosophy) line at infinity continuum (set theory) projectively extended real line where mathematics comes from nonstandard calculus de analysi per aequationes numero terminorum infinitas superreal number hyperinteger levi- civita field ideal point semi-infinite paradoxes of infinity circular points at infinity
Mathematics_Philosophy of mathematics