English Dictionary

birational geometry

noun

(algebraic geometry) A field of algebraic geometry in which the aim is to determine under what conditions two algebraic varieties are isomorphic outside lower-dimensional subsets.

Birational geometry studies the properties of algebraic varieties that are related by birational transformations.

意味（1）

(algebraic geometry) A field of algebraic geometry in which the aim is to determine under what conditions two algebraic varieties are isomorphic outside lower-dimensional subsets.

Birational geometry amounts to the study of mappings given by rational functions rather than polynomials.