EntityQ1307676· pop 9· linked from 35 articlesKünneth theoremSign in to savetheoremConnectionscohomologyEntityBetti numberEntitymathematicsEntityInternational Standard Book NumberEntitynatural numberEntitydigital object identifierEntitycross productEntitytopological spaceEntityAlexander GrothendieckEntityMichael AtiyahEntityalgebraic topologyEntityalgebraic varietyEntityAmerican Mathematical SocietyEntityhomological algebraEntityhomologyEntityJean DieudonnéEntitytensor productEntitySaunders Mac LaneEntitygenerating functionEntityEncyclopedia of MathematicsEntityCategoriesHomological algebraTheorems in algebraic topology