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计算机绘制正圆环与圆球的相贯线
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作者 宋晓梅 《青岛科技大学学报(自然科学版)》 CAS 1989年第4期91-96,共6页
本文应用平方变换的原理,在计算机上快速简捷地绘制出正圆环与圆球相贯的相贯线,可满足计算机辅助教学的要求。是研究将高等画法几何的作图方法在计算机上实现的初步尝试。
关键词 平方变换 相贯线 正圆环 圆球
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Normal Form of the Elliptic Curve Over the Finite Ring
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作者 Abdelhamid TADMORI Abdelhakim CHILLALI M'hammed ZIANE 《Journal of Mathematics and System Science》 2014年第3期194-196,共3页
In this work, we will to study the equation of an elliptic curve over the ring An = F2d [E], en = 0.,where d. is a positive integer. More precisely we defined the J-invariant of an elliptic curves over the ring An and... In this work, we will to study the equation of an elliptic curve over the ring An = F2d [E], en = 0.,where d. is a positive integer. More precisely we defined the J-invariant of an elliptic curves over the ring An and we establish re(J) = j, wherej is the j-invariant of an elliptic curve over the field F2d and re is the canonical projection defined over ring An by F2d , see [1]. 展开更多
关键词 Elliptic Curves finite ring J-invariant.
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