Landau's Theorem
If f is a holomorphic function in the unit disc with the property |f′(0)| = 1, then the image of f contains a disc of radius l, where l ≥ b is an absolute constant.
This theorem is named after Edmund Landau.
Read more about this topic: Bloch's Theorem (complex Variables)
Famous quotes containing the word theorem:
“To insure the adoration of a theorem for any length of time, faith is not enough, a police force is needed as well.”
—Albert Camus (1913–1960)