New posts in Elementary Functions

A function that grows faster than any function in the sequence $e^x, e^{e^x}, e^{e^{e^x}}$...

Why do un-integrable functions exist?

Asymptotic approximation of the arctangent?

Why can't we define more elementary functions?

List of functions not integrable in elementary terms

How much math do we need to prove all simple numeric identities?

Treatise on non-elementary integrable functions

Nice expression for minimum of three variables?