EntityQ840594· pop 8· linked from 67 articlesmotiveSign in to saveconjectural objects in algebraic geometry that provide a universal cohomology theory of varietiesConnectionsintegerEntityPierre DeligneEntityalgebraic varietyEntitycohomologyEntityMayer–Vietoris sequenceEntityetale cohomologyEntityFrenchEntityInternational Standard Book NumberEntitycomplex numberEntitylinear algebraEntitydigital object identifierEntityInternational Standard Serial NumberEntityvector spaceEntityFields medalEntitycurveEntityringEntityalgebraic geometryEntitybibcodeEntityQ118398EntityAlexander GrothendieckEntityCategoriesAlgebraic geometryHomological algebraTopological methods of algebraic geometry