quartic

This paper proposes a piecewise geometric approach to parametrize a kind of quartic implicit algebraic surface.

针对一类四次隐式代数曲面,提出一种基于分片的几何参数化方法.

Moreover equations of degree higher than quartic often arise in equilibrium calculations.

况且,在平衡计算中常常发生比四次方程还高的高次方程.

In fact, this rational quartic spline is the successful generalization of quartic polynomial spline.

事实上, 这种有理插值样条曲线是C~ 2连续的四次多项式样条的成功推广.