# Graph complement

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of an unoriented graph $G$

The graph $\bar G$ on the same vertex set $V$ as $G$, where $x,y$ are adjacent in $\bar G$ if and only if they are not adjacent in $G$.

How to Cite This Entry:
Complementary graph. Encyclopedia of Mathematics. URL: http://www.encyclopediaofmath.org/index.php?title=Complementary_graph&oldid=37433