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Guichard-Combinatorics-Graph-Theory
· Problem 5.9.3
Graph Theory
Mathematics — Probability · chromatic-polynomial
Problem
Show that the constant term of
P
G
(
k
)
P_G(k)
P
G
(
k
)
is 0. Show that the coefficient of
k
k
k
in
P
G
(
k
)
P_G(k)
P
G
(
k
)
is non-zero if and only if
G
G
G
is connected.
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