摘要
本文讨论二次曲面上存在圆截线的充要条件 ,若其特征根 t1≥ t2 ≥ t3 ,且 t2 ≠ 0 。
In this paper,we discuss the necessary and sufficient condition with respect to which there are circular cross-sections on quadric surface,if the characteristic roots t 1t 2t 3 and t 2≠0,then there are circular cross-sections.
出处
《安庆师范学院学报（自然科学版）》
2002年第1期41-43,共3页
Journal of Anqing Teachers College(Natural Science Edition)
