An online LaTeX editor thats easy to use.
For instance its customary to represent real numbers with a blackboard bold font or topological spaces with calligraphic font. List of Mathematical Symbols R real numbers Z integers Nnatural numbers Q rational numbers P irrational numbers. 5 23. The set of real numbers is a totally ordered and complete though not algebraically closed uncountable set of points which can be thought of as constituting a doubly infinitely long line called the number line or real line where the points corresponding to rational numbers form a dense and countable subset of the reals and where the.