Outrageously Funny Word Dictionary :: Isogeny

👉 In algebraic geometry, an isogeny between two curves (or more generally algebraic varieties) is a morphism that changes the curve's degree by a constant factor. This notion is central in understanding how algebraic curves can be related to one another and can also be used to study various geometric objects such as surfaces. An example of an isogeny from the projective line (the set of all lines in R^2) to itself, where the change of degree is 1

isogeny