WT5”BZ]This paper,we give a new way of simplification of central conic equation,and genaralize this method to the central quadric in the three dimensional Euclidean spaceE 3. [WT5”HZ]
In this paper,We give the theories of inverse polar correspondence and inverse polar envelope of second ordersurface in R~3,and study their properties by analytic method.
This paper studies the opposite polar envelope of non - degenerate sur-face of second order to central quadratic surface in three- dimensional Euclideanspace IR~3 and gives its law.
To confirm center conicoid,it is not easy by using I 4 for heavily calculation. But by the center of conicoid,we can ascertain the main diameter with center coordinate and the criterion equation,more than definitude the important status and simple figure of the center in center conicoid.
In this paper,We give the theories of inverse polar correspondence and inverse polar envelope of second ordersurface in R~3,and study their properties by analytic method.
This paper studies the opposite polar envelope of non - degenerate sur-face of second order to central quadratic surface in three- dimensional Euclideanspace IR~3 and gives its law.
WT5”BZ]This paper,we give a new way of simplification of central conic equation,and genaralize this method to the central quadric in the three dimensional Euclidean spaceE 3. [WT5”HZ]