Herbert Grötzsch

Camillo Herbert Grötzsch (21 May 1902 – 15 May 1993) was a German mathematician.

He was born in Döbeln and died in Halle.

Grötzsch worked in graph theory.

He was the discoverer and eponym of the Grötzsch graph, a triangle-free graph that requires four colors in any graph coloring, and Grötzsch's theorem, the result that every triangle-free planar graph requires at most three colors.

A student of Paul Koebe, he made important contributions to the theory of conformal mappings and univalent functions: he was the first to introduce the concept of a quasiconformal mapping.