we survey the reduction formula of characteristic polynomial of regular m-crossing tree and obtain which regular m-crossing tree become the integral graph condition.
本文主要是研究正则m-叉树特征多项式的递推公式,并通过其递推公式来得出正则m-叉树成为整图的条件。
in this paper, a degree reduction formula for b-spline curves is developed by means of the coefficient matrix of b-spline curves.
已有的b样条曲线降阶方法,由于无降阶公式可循,对于可降阶曲线常要通过解一系列线性方程组来实现降阶。
the various countries' standard all has made the corresponding simplification , the reduction formula form applies in the project practice.