Category Theory, Homology Theory and their Applications II [electronic resource] : Proceedings of the Conference held at the Seattle Research Center of the Battelle Memorial Institute, June 24 – July 19, 1968 Volume Two.

Relations for groups and for exact categories -- Galois objects and extensions of Hopf Algebras -- Three dimensional non-abelian cohomology for groups -- H-spaces -- Construction de structures libres -- Categories of group extensions -- Algebras graded by a group -- Diagonal arguments and cartesian closed categories -- Foundations for categories and sets -- On the dimension of objects and categories III Hochschild dimension -- Locally Noetherian categories and generalized strictly linearly compact rings. Applications -- Kan extensions, cotriples and andré (co) homology.