Transcendental number > Numbers proven to be transcendental: https://en.wikipedia.org/wiki/Transcendental_number#Numbers_... :

> [ π, e^a where a>0, ln(a) where a!=0 and a!=1, ]

e (Euler) https://en.wikipedia.org/wiki/E_(mathematical_constant)

Pi (Archimedes,) https://en.wikipedia.org/wiki/Pi

Avogadro constant: https://en.wikipedia.org/wiki/Avogadro_constant

Approximations of Pi: https://en.wikipedia.org/wiki/Approximations_of_%CF%80

List of representations of e: https://en.wikipedia.org/wiki/List_of_representations_of_e

Four dimensional space, 4D, Minkowski (SR), Einstein (GR) https://en.wikipedia.org/wiki/Four-dimensional_space

Four vector: https://en.wikipedia.org/wiki/Four-vector

Four velocity: https://en.wikipedia.org/wiki/Four-velocity

Four gradient: https://en.wikipedia.org/wiki/Four-gradient

List of mathematical constants: https://en.wikipedia.org/wiki/List_of_mathematical_constants