e/Theorem of the cube

Information
has gloss	eng: In mathematics, the theorem of the cube is a condition for a line bundle of a product of three complete varieties to be trivial. It was a principle discovered, in the context of linear equivalence, by the Italian school of algebraic geometry. The specific result was proved under this name, in the early 1950s, in the course of his fundamental work on abstract algebraic geometry by André Weil; a discussion of the history has been given by . A treatment by means of sheaf cohomology, and description in terms of the Picard functor, was given by .
lexicalization	eng: Theorem of the cube
instance of	c/Algebraic varieties