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2 cards from this section. Quick, good the night before a test.
What is the complement of a graph?
Consider what edges exist in the original graph.
If H is a subgraph of G, what is one potential outcome for H'?
Think of how edges relate in complements.
If H is a subgraph of G, what can we say about H' regarding G'?
Think of how edges in complements might change.
True or False: A graph and its complement must always share the same number of vertices.
Consider the definition of a complement.
Devise a connected graph G and its subgraph H such that the complement of the subgraph H' avoids being a true subgraph of G's complement G'.
Visualize the square and track each edge's existence.
Using a given graph, manually determine and plot its complement, exploring vertex relationships therein.
Connect each node and observe missing edges.
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