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Undergraduate
By
John Doe
on Nov. 3, 2012 | Updated Dec. 6, 2017
Direct reduction from Graph Homomorphism to SAT
The decision problem \(GraphHomo\) is defined as follows: \(GraphHomo = \{\langle G, H\rangle \mid \text{there is a graph homomorphism from G to H}\}\) Give a direct reduction from \(GraphHomo\) to …
Computer Science
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np
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Undergraduate
By
Shiva Kintali
on June 12, 2012 | Updated Dec. 6, 2017
Subset Sum vs Partition
Consider the following problems : Partition problem : Given a collection of \(n\) integers \(a_1, a_2, \ldots, a_n\), is there a subset \(I~\subset~{1,2, \ldots, n }\) such that …
Computer Science
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NP completeness
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Graduate
By
Shiva Kintali
on June 9, 2012 | Updated Dec. 6, 2017
Minimum edge cover vs Maximum matching
An edge cover of a graph \(G(V,E)\) is a subset \(F \subseteq E\) of edges such that every node is incident to at least one edge in \(F\). Show that a minimum cardinality edge cover can be determine…
Mathematics
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Graph Theory
Linear Programming
edge cover
matching
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