Weber modular function
FAMILY OF THREE FUNCTIONS BY HEINRICH MARTIN WEBER
Weber's modular function; Weber modular functions; Weber's modular functions
In mathematics, the Weber modular functions are a family of three functions f, f1, and f2,f, f1 and f2 are not modular functions (per the Wikipedia definition), but every modular function is a rational function in f, f1 and f2. Some authors use a non-equivalent definition of "modular functions".