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Remove extra citations

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Antti H S Laaksonen 2017-02-22 21:44:42 +02:00
parent 2784ffa5ee
commit b12d09ee6c
2 changed files with 3 additions and 7 deletions
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2
chapter12.tex
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@ -546,4 +546,4 @@ it is difficult to find out if the nodes
in a graph can be colored using $k$ colors
so that no adjacent nodes have the same color.
Even when $k=3$, no efficient algorithm is known
but the problem is NP-hard \cite{gar79}.
but the problem is NP-hard.

8
chapter17.tex
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@ -559,9 +559,5 @@ and both $x_i$ and $x_j$ become false.
A more difficult problem is the \key{3SAT problem}
where each part of the formula is of the form
$(a_i \lor b_i \lor c_i)$.
This problem is NP-hard \cite{gar79}, so no efficient algorithm
for solving the problem is known.
This problem is NP-hard, so no efficient algorithm
for solving the problem is known.