Representations, Characters and Finite-Group Applications
Handbook guide to representations, characters, with definitions, key results, methods, verification checks and worked examples.
Every page in the KEVOS library tagged applications. 8 pages.
Handbook guide to representations, characters, with definitions, key results, methods, verification checks and worked examples.
Handbook guide to sylow theory and finite-group applications with core definitions, structural results, reasoning methods and verification checks.
Solving integer linear systems, computing indices and intersections, and testing module membership using the Hermite normal form.
The derived category, localisation at quasi-isomorphisms, triangulated structure, derived functors in the modern sense, and the stable module category.
Cohomological dimension of groups, the Stallings-Swan theorem, finiteness conditions FP_n and F_n, duality groups, and the role of torsion.
The topological origins of homological algebra, singular and cellular chains, the Eilenberg-Zilber and Kunneth theorems in topology, classifying spaces, and the dictionary betwe…
Representation theory in characteristic dividing the group order, failure of semisimplicity, relative projectivity, complexity and support varieties, and the Quillen stratificat…
The lower central series, homological characterisation of nilpotent quotients, the Stallings and Stammbach theorems, and applications to group presentations.