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PPA (complexity)

In computational complexity theory, PPA is a complexity class, standing for "Polynomial Parity Argument" (on a graph). Introduced by Christos Papadimitriou in 1994 (page 528), PPA is a subclass of TFNP. It is a class of search problems that can be shown to be total by an application of the handshaking lemma: any undirected graph that has a vertex whose…

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Overview

Definition

Related classes

  • PPAD PPAD (complexity)

Examples

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Map overview Semantic statistics

PPA (complexity)

Nodes16
Edges15
Triples0
Avg. degree1.88
Density0.125
Components1

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Important terminology

ppa graph problem vertex search complete class known given odd-degree find total ppad circuit subclass problems lemma whose odd number

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SubjectPredicateObjectConfidenceSrc

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