It takes the average reader 5 hours and 56 minutes to read Representation Theory of Finite Group Extensions by Tullio Ceccherini-Silberstein
Assuming a reading speed of 250 words per minute. Learn more
This monograph adopts an operational and functional analytic approach to the following problem: given a short exact sequence (group extension) 1 → N → G → H → 1 of finite groups, describe the irreducible representations of G by means of the structure of the group extension. This problem has attracted many mathematicians, including I. Schur, A.H. Clifford, and G. Mackey and, more recently, M. Isaacs, B. Huppert, Y.G. Berkovich & E.M. Zhmud, and J.M.G. Fell & R.S. Doran. The main topics are, on the one hand, Clifford Theory and the Little Group Method (of Mackey and Wigner) for induced representations, and, on the other hand, Kirillov’s Orbit Method (for step-2 nilpotent groups of odd order) which establishes a natural and powerful correspondence between Lie rings and nilpotent groups. As an application, a detailed description is given of the representation theory of the alternating groups, of metacyclic, quaternionic, dihedral groups, and of the (finite) Heisenberg group. The Little Group Method may be applied if and only if a suitable unitary 2-cocycle (the Mackey obstruction) is trivial. To overcome this obstacle, (unitary) projective representations are introduced and corresponding Mackey and Clifford theories are developed. The commutant of an induced representation and the relative Hecke algebra is also examined. Finally, there is a comprehensive exposition of the theory of projective representations for finite Abelian groups which is applied to obtain a complete description of the irreducible representations of finite metabelian groups of odd order.
Representation Theory of Finite Group Extensions by Tullio Ceccherini-Silberstein is 347 pages long, and a total of 89,179 words.
This makes it 117% the length of the average book. It also has 109% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes 8 hours and 7 minutes to read Representation Theory of Finite Group Extensions aloud.
Representation Theory of Finite Group Extensions is suitable for students ages 12 and up.
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