In mathematics, the Abhyankar–Moh theorem states that if
extends to an automorphism of the plane.
It is named after Shreeram Shankar Abhyankar and Tzuong-Tsieng Moh, who published it in 1975.
More generally, the same theorem applies to lines and planes over any algebraically closed field of characteristic zero, and to certain well-behaved subsets of higher-dimensional complex affine spaces.
This algebraic geometry–related article is a stub.