Structure of A(2)-fibrations over one-dimensional noetherian domains

[摘要] Let R be a one-dimensional noetherian domain containing the field Q of rational numbers. Let A be an A(2)-fibration over R. Then there exists H is an element of A such that A is an A(1)-fibration over R[H]. As a consequence, if Omega(A/R) is free then A = R([2]).

[发布日期] 1997-02-14