Explores derived functors, Ext-modules, Yoneda extensions, and derived categories in the context of extending modules.
Discusses linearly reductive groups and their properties, focusing on completely reducible representations and equivalent modules.
Explores the Mayer-Vietoris sequence, exact homomorphisms, embedded spheres, and path-connected spaces.
Explores modules over a ring, injective morphisms, isomorphisms, and canonical groups.
Explores the construction of group representations through various methods and provides an illustrative example using the standard representation of sr2 on c2.
