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在统筹法推广应用中,我们经常遇到一个问题,即绘出统筹图之后,如何简捷地确定主要矛盾线。本文提出一种“破圈法”,可以解决这一问题。一、定义与记号我们用G表示统筹图。G有如下特点: 1.G是有限的赋非负权的有向图; 2.G中不含有有向圈; 3.G中只和“出去的”弧相关联的点称为G的起点,如果G恰有一个起点,则该点到G中其余点都有路相通;如果G不只一个起点,那末可在G中添加一个新点S,使S
In the promotion and application of the co-ordination law, we often encounter a problem, that is, how to determine the main contradiction line simply after drawing up the overall plan. This paper proposes a “break circle method” that can solve this problem. I. Definitions and notations We use G to represent a plan. G has the following characteristics: 1.G is a limited directed non-negative weighted directed graph; 2.G does not contain directed circles; 3.G only points associated with the “outgoing” arc are called G’s starting point. If G has exactly one starting point, then this point has the same path to the rest of G; if G has more than one starting point, then a new point S can be added to G to make S