EntityQ843550· pop 13· linked from 106 articlespolynomial-time approximation schemeSign in to savecomplexity classConnectionsAPXEntitycomputer scienceEntityInternational Standard Book NumberEntityalgorithmEntitydigital object identifierEntityP versus NP problemEntitytravelling salesperson problemEntitybig O notationEntitytime complexityEntityNP-hardEntityrandomized algorithmEntityapproximation algorithmEntityoptimization problemEntitypolylogarithmic functionEntitySanjeev AroraEntityAngelika StegerEntityMarek KarpinskiEntityparameterized complexityEntityL-reductionEntityCategoriesApproximation algorithmsComplexity classes