r-r cycle length 中文意思是什麼
r-r cycle length
解釋
r-r周期長度-
In 1973, r. c. entringer raised the following question : determine which simple graphs g have exactly one cycle of each length l, 3 l v. in this paper, entringer ' s problem is extended to directed graphs and get serveral results about uniquely pancyclic digraphs
Entringer提出了確定唯一泛圈圖的問題,即確定簡單圖g使得對3 l v的每個l恰有一個長為l的圈。本文將entringer這個問題推廣到定向圖中,研究了唯一泛圈有向圖的若干問題。
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