Function: teichmuller
Section: transcendental
C-Name: teich
Prototype: G
Help: teichmuller(x): teichmuller character of p-adic number x.
Doc: Teichm\"uller character of the $p$-adic number $x$, i.e. the unique
 $(p-1)$-th root of unity congruent to $x / p^{v_p(x)}$ modulo $p$.
