Combinatorica`
Combinatorica`
UndirectedQ
As of Version 10, most of the functionality of the Combinatorica package is built into the Wolfram System. »
UndirectedQ[g]
yields True if graph 
is undirected.
更多信息和选项
- UndirectedQ functionality is now available in the built-in Wolfram Language function UndirectedGraphQ.
- To use UndirectedQ, you first need to load the Combinatorica Package using Needs["Combinatorica`"].
范例
基本范例 (2)
UndirectedQ has been superseded by UndirectedGraphQ:
Wolfram Research (2012)，UndirectedQ，Wolfram 语言函数，https://reference.wolfram.com/language/Combinatorica/ref/UndirectedQ.html.
文本
Wolfram Research (2012)，UndirectedQ，Wolfram 语言函数，https://reference.wolfram.com/language/Combinatorica/ref/UndirectedQ.html.
CMS
Wolfram 语言. 2012. "UndirectedQ." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/Combinatorica/ref/UndirectedQ.html.
APA
Wolfram 语言. (2012). UndirectedQ. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/Combinatorica/ref/UndirectedQ.html 年