Flag
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Flag --- флаг.
A flag is a graph obtained from [math]\displaystyle{ C_{4} }[/math] by adding a vertex adjacent to exactly one vertex of [math]\displaystyle{ C_{4} }[/math].
Flag --- флаг.
A flag is a graph obtained from [math]\displaystyle{ C_{4} }[/math] by adding a vertex adjacent to exactly one vertex of [math]\displaystyle{ C_{4} }[/math].