Non-abelian cohomology of associative algebras. The -term exact sequence
Non-abelian cohomology of groups.
Non-abelian cohomology with coefficients in crossed bimodules.
Non-abelian tensor and exterior products modulo and universal -central relative extension of Lie algebra.
Non-abelian tensor product of Lie algebras and its derived functors.
Normalisation for the fundamental crossed complex of a simplicial set.