Hopf algebras (2) Classifying spaces (2) Hopf, Álgebras de (2) Hopf, Algèbres de (2) Espaces classifiants (2) Homology theory (1) Algebra, Homological (1) Suspension (1) Álgebra homológica (1) Homología (1) Suspension (1) Algèbre homologique (1) Homologie (1)