Let F=LF be a s-closed local formation such that every minimal non-F-groups is solvable. It is proved that 1 If every cyclic subgroup of of order 4 and every minimal subgroup of G are contained in, then G is a F-group. 2 If there exists a normal subgroup N of G such that G/N∈F and every cyclic subgroup of N of order 4 is weakly c-normal in G and every element of N of prime order is contained in Z(superscript f subscript ∞), then G is a F-group.

設(shè)F=LF是一個(gè)子群閉的局部群系五月婷婷精品视频6，滿足每個(gè)極小非F-群是可解群男女搞黄视频，證明了：1如果G的任意極小子群和任意4階循環(huán)子群都含于Z中欧美A片大全，那么G是F-群xx666.xxxx；2如果存在G的正規(guī)子群，使得G/N∈F操操操com，且N的任一4階循環(huán)子群在G中弱c-正規(guī)亚洲激情图库专区，N的任一素?cái)?shù)階元含于Z中，那么G是F-群人体国模私拍av。

It is improved to solve the prematurely and stagnation problems of traditional Ant Colony Optimization in the paper. First, mean value method is used to update pheromone to avoid premature convergence which leads to non-globally optimal solution. Second, Pheromone is updated by Best Track to speed the rate of convergence which will help to avoid locally optimal solution.

本文針對(duì)基本蟻群算法比較容易陷入早熟和停滯欧美日韩一区二区三区在线观看，對(duì)現(xiàn)有蟻群算法的信息素更新規(guī)則進(jìn)行了改進(jìn)淫淫综合网，一是采用平均值法更新信息素，避免算法過(guò)早收斂于非全局最優(yōu)解日韩AA黄片；二是采用最佳路徑法更新信息素在线天堂www在线.中文欧美，可加快收斂速度，并使算法跳出局部最優(yōu)解99re5久久在热线播放。