EntityQ1197709· pop 19· linked from 94 articlesreductionSign in to savetransformation of one computational problem to another, used to show that the second problem is as difficult as the firstConnectionstime complexityEntitypolynomial-time reductionEntityInternational Standard Book NumberEntityalgorithmEntitynatural numberEntitysquare rootEntityirrational numberEntityTuring machineEntitypower setEntitycomputability theoryEntitytransitive relationEntitymathematical structureEntityreductio ad absurdumEntitycomputational complexity theoryEntityreflexive relationEntityRon RivestEntityhalting problemEntityNPEntityNP-completeEntitydecision problemEntityCategoriesReduction (complexity)