'Np conp' presentation slideshows

From Decision to Optimization and Enumeration

From Decision to Optimization and Enumeration. 7.3.1 to 7.3.3. 7.3.1. Turing Reductions and Search problems. In the Beginning. When studying complexity theory we generally restrict our problems to decision problems. This is done to ease the study.

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The Complexity of Lattice Problems

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GapSVP ? n and GapCVP ? n are in NP ? coNP

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CS21 Decidability and Tractability

CS21 Decidability and Tractability. Lecture 23 March 6 , 2019. Outline. NP-complete problem: max cut (finishing up) The complexity class coNP The complexity class coNP NP The complexity class PSPACE a PSPACE-complete problem. MAX CUT.

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The Class P

[Section 7.2]. The Class P. Def 7.12: The class P consists of languages that are decidable in polynomial time, i.e., P = [ k TIME(n k ) Example: PATH = { <G,s,t> | G is a digraph that has a path from s to t }. [Section 7.2]. The Class P.

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On the Complexity of Search Problems George Pierrakos

On the Complexity of Search Problems George Pierrakos. Mostly based on: On the Complexity of the Parity Argument and Other Insufficient Proofs of Existence [Pap94] On total functions, existence theorems and computational complexity [MP91] How easy is local search? [JPY88]

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The class NP

CSC 4170 Theory of Computation. The class NP. Section 7.3. 7.3.a. The HAMPATH problem. A Hamiltonian path in a directed graph G is a directed path that goes through each node exactly once. We consider a special case of this problem where the start node and target node are fixed.

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