數學嘅分支——圖論入面,粵拼tou4英文graph)用嚟表示物件同物件之間嘅關係,係圖論嘅基本研究對象。一個圖係由一啲點(稱為頂點或結點,vertex/node/point)同連結呢啲點嘅直線或者曲線(稱為邊,edge/link/line)組成。[1]Sylvester喺 1878 年首次提出「圖」呢個名詞。

參考

  1. Trudeau, Richard J. (1993). Introduction to Graph Theory (第Corrected, enlarged republication.版). New York: Dover Pub. p. 19. ISBN 978-0-486-67870-2. 喺8 August 2012搵到. A graph is an object consisting of two sets called its vertex set and its edge set.