翻訳と辞書 Words near each other ・ Feel It (Three 6 Mafia song) ・ Feel It Again ・ Feel It All ・ Feel It All (Tokio Hotel song) ・ Feel It Boy ・ Feel It Break ・ Feel It in My Bones ・ Feel It with Me ・ Feel Like a Rock Star ・ Feel Like Dance ・ Feedback Is Payback ・ Feedback linearization ・ Feedback loop (email) ・ Feedback passivation ・ Feedback suppressor ・ Feedback vertex set ・ Feedback with Carry Shift Registers ・ Feedback-controlled electromigration ・ Feedbag ・ Feedbin ・ Feedbooks ・ FeedBurner ・ FeedDemon ・ Feeder ・ Feeder (beekeeping) ・ Feeder (disambiguation) ・ Feeder Airlines ・ Feeder bluff ・ Feeder cattle ・ Feeder Dam Bridge Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Feedback vertex set ： ウィキペディア英語版 Feedback vertex set In the mathematical discipline of graph theory, a feedback vertex set of a graph is a set of vertices whose removal leaves a graph without cycles. In other words, each feedback vertex set contains at least one vertex of any cycle in the graph. The feedback vertex set problem is an NP-complete problem in computational complexity theory. It was among the first problems shown to be NP-complete. It has wide applications in operating systems, database systems, and VLSI chip design. == Definition == The decision problem is as follows: :INSTANCE: An (undirected or directed) graph $G\; =\; (V,\; E)$ and a positive integer $k$. :QUESTION: Is there a subset $X\; \backslash subseteq\; V$ with $|X|\; \backslash leq\; k$ such that $G$ with the vertices from $X$ deleted is cycle-free? The graph $G(\backslash setminus\; X)$ that remains after removing $X$ from $G$ is an induced forest (resp. an induced directed acyclic graph in the case of directed graphs). Thus, finding a minimum feedback vertex set in a graph is equivalent to finding a maximum induced forest (resp. maximum induced directed acyclic graph in the case of directed graphs). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Feedback vertex set」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.