Birational Transformation
A transformation in which coordinates in two spaces are expressed rationally in terms of those in another.
See also
Riemann Curve Theorem, Weber's TheoremExplore with Wolfram|Alpha
WolframAlpha
Cite this as:
Weisstein, Eric W. "Birational Transformation." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/BirationalTransformation.html