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Perfect Graphs in Graph Theory: Characterization and Examples, Slides of Design Patterns

An introduction to perfect graphs in graph theory, defining the concept and listing some classes of graphs known to be perfect, including bipartite graphs, line graphs of bipartite graphs, comparability graphs, and chordal graphs. Perfect graphs are characterized by having the chromatic number equal to the clique number for every induced subgraph.

Typology: Slides

2012/2013

Uploaded on 04/20/2013

sathyai
sathyai 🇮🇳

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Graph Theory: Lecture No. 23
Perfect Graphs: A graph Gis perfect if
χ(H) = ω(H)for every induced subgraph Hof
G.
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Graph Theory: Lecture No. 23

Perfect Graphs: A graph G is perfect if

χ(H) = ω(H) for every induced subgraph H of

G.

Docsity.com

Graph Theory: Lecture No. 23

Some classes which are known to be perfect:

1 Bipartite Graphs

2 Complements of Bipartite Graphs

3 Line graphs of Bipartite Graphs.

4 Complements of Bipartite Graphs.

5 Comparability Graphs.

6 Co-comparability Graphs.

7 Interval Graphs

8 Co-Interval Graphs.

9 Chordal Graphs.

10 Co-Chordal Graphs. Docsity.com