摘要
对于树枝状铁路专用线直达列车取送车问题,为了尽可能缩短车辆在站停留时间,本文就调机送后等取或单送和送后再取分别研究.通过建立图论和排序论数学模型,给出了树枝状铁路专用线取送车问题在上述两种情况下的简单快速算法.
In this paper,some lattice properties of cardinal power Y X with base Y and exponenet X are studied.The main reslts are following: (1) Y X is a lattice (or modular lattice,or distributive lattice,or complete lattice),if and only if Y is so. (2) Y X is a complemented lattice,if and only if Y is so, and X is a ono-ordered set.
出处
《河南大学学报(自然科学版)》
CAS
1997年第2期1-8,共8页
Journal of Henan University:Natural Science
关键词
铁路专用线
取送车作业计划
数学模型
图论
cardinal power of poset,lattice,modular lattice,distributive alttice,complemented lattice,compltet lattice.