Linear, Lie and Representation Algebra

Branches that treat algebra through vector spaces, matrices, continuous symmetry and the action of structures on spaces. An entry belongs here when its cited source describes linear maps and matrices over a field, the study of Lie groups and Lie algebras, or the way abstract groups and algebras are realised as linear transformations. It does not belong here when the branch studies an abstract structure without reference to linear action, which belongs with the general structures or with groups rings and fields. The group collects the parts of algebra that connect most directly to geometry, physics and applied linear computation.