Tag
Derived Functor
3 resources tagged “Derived Functor” across the knowledge library.
3 items
Guide6 Aug 2026Derived FunctorsLeft and right derived functors, their construction from resolutions, the fundamental properties, and the axiomatic characterisation by universality.4 min readRead MoreGuide6 Aug 2026Homological Algebra: Discipline OverviewStructural overview of homological algebra: the failure of exactness, resolutions and derived functors, the central invariants Ext and Tor, and how the machinery specialises to groups, Lie algebras and topology.5 min readRead MoreGuide6 Aug 2026The Long Exact Sequences of Derived FunctorsDerivation of the long exact sequences of derived functors via the horseshoe lemma, their naturality, dimension shifting and the standard computational patterns.3 min readRead More