For an algebraic curve C with genus 0 the vector space ja:math ( D ) where D is a divisor of degree 2 gives rise to a bijective morphism g from C to a con... MV Hoeij - 《Journal of Symbolic Computation》 被引量: 160发表: 1996年 Influence functions and efficiencies of the canoni...
O. KharlampovichDepartment of Mathematics and Statistics, McGill University, 805 Sherbrooke Street West, Montreal, QC, H3A 2K6, CanadaA. MyasnikovDepartment of Mathematics, City College (CUNY), Convent Avenue at 138th Street, New York, New York, 10031-9100Journal of Algebra...
afBne morphism 仿射态射!心ne m.,hism;a中扣.洲‘‘Mop加,M] 概形的态射f二X~S,使得S中每个开仿射子概形的原象也是一个仿射概形(affine scheme).概形X称为仿射s概形(affines一scheme)· 设s是一个概形,A是少s代数的拟凝聚层,矶是S内开仿射子概形,它们构成S的一个夜叠.那么把仿射概形Specr(...