Find the chromatic number of each of the graphs given below. (a) The path graph P15 X (P15) = (b) The cycle graph C12 X (C12) = (c) The cycle graph C13 X (C13) = (d) The complete bipartite graph K6,13 X (K6,13) = (e) The complete graph K15 X (K15)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Find the chromatic number of each of the graphs given below.
(a) The path graph P15
X (P15) =
(b) The cycle graph C12
X (C12) =
(c) The cycle graph C13
X
(C13) =
(d) The complete bipartite graph K6,13
X (K6,13) =
(e) The complete graph K15
X (K15)
Transcribed Image Text:Find the chromatic number of each of the graphs given below. (a) The path graph P15 X (P15) = (b) The cycle graph C12 X (C12) = (c) The cycle graph C13 X (C13) = (d) The complete bipartite graph K6,13 X (K6,13) = (e) The complete graph K15 X (K15)
Expert Solution
Step 1

Chromatic number of path graph Pn is 2

 

Chromatic number of cycle graph Cn is 3 if n is odd otherwise 2

 

Chromatic number of complete bipartite graph Km,n is max{m,n}

 

Chromatic number of complete graph Kn is n

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