用产品经理的心态对待咖啡，不断迭代好喝的咖啡。公众号：咖啡平方
懒是一切进步的源泉。公众号：杂谈by立行
，详情可参考爱思助手下载最新版本
Abstract:Flips in triangulations of convex polygons arise in many different settings. They are isomorphic to rotations in binary trees, define edges in the 1-skeleton of the Associahedron and cover relations in the Tamari Lattice.，这一点在搜狗输入法下载中也有详细论述
(adapted from this example):