1st Edition

Representation Theory of Symmetric Groups

By Pierre-Loic Meliot Copyright 2017
    682 Pages 134 B/W Illustrations
    by CRC Press

    682 Pages 134 B/W Illustrations
    by Chapman & Hall

    682 Pages 134 B/W Illustrations
    by Chapman & Hall

    Representation Theory of Symmetric Groups is the most up-to-date abstract algebra book on the subject of symmetric groups and representation theory. Utilizing new research and results, this book can be studied from a combinatorial, algorithmic or algebraic viewpoint.



    This book is an excellent way of introducing today’s students to representation theory of the symmetric groups, namely classical theory. From there, the book explains how the theory can be extended to other related combinatorial algebras like the Iwahori-Hecke algebra.



    In a clear and concise manner, the author presents the case that most calculations on symmetric group can be performed by utilizing appropriate algebras of functions. Thus, the book explains how some Hopf algebras (symmetric functions and generalizations) can be used to encode most of the combinatorial properties of the representations of symmetric groups.



    Overall, the book is an innovative introduction to representation theory of symmetric groups for graduate students and researchers seeking new ways of thought.



    I Symmetric groups and symmetric functions



    Representations of finite groups and semisimple algebras



    Finite groups and their representations



    Characters and constructions on representations



    The non-commutative Fourier transform



    Semisimple algebras and modules



    The double commutant theory



    Symmetric functions and the Frobenius-Schur isomorphism



    Conjugacy classes of the symmetric groups



    The five bases of the algebra of symmetric functions



    The structure of graded self-adjoint Hopf algebra



    The Frobenius-Schur isomorphism



    The Schur-Weyl duality



    Combinatorics of partitions and tableaux



    Pieri rules and Murnaghan-Nakayama formula



    The Robinson-Schensted-Knuth algorithm



    Construction of the irreducible representations



    The hook-length formula



    II Hecke algebras and their representations



    Hecke algebras and the Brauer-Cartan theory



    Coxeter presentation of symmetric groups



    Representation theory of algebras



    Brauer-Cartan deformation theory



    Structure of generic and specialised Hecke algebras



    Polynomial construction of the q-Specht modules



    Characters and dualities for Hecke algebras



    Quantum groups and their Hopf algebra structure



    Representation theory of the quantum groups



    Jimbo-Schur-Weyl duality



    Iwahori-Hecke duality



    Hall-Littlewood polynomials and characters of Hecke algebras



    Representations of the Hecke algebras specialised at q = 0



    Non-commutative symmetric functions



    Quasi-symmetric functions



    The Hecke-Frobenius-Schur isomorphisms



    III Observables of partitions



    The Ivanov-Kerov algebra of observables



    The algebra of partial permutations



    Coordinates of Young diagrams and their moments



    Change of basis in the algebra of observables



    Observables and topology of Young diagrams



    The Jucys-Murphy elements



    The Gelfand-Tsetlin subalgebra of the symmetric group algebra



    Jucys-Murphy elements acting on the Gelfand-Tsetlin basis



    Observables as symmetric functions of the contents



    Symmetric groups and free probability



    Introduction to free probability



    Free cumulants of Young diagrams



    Transition measures and Jucys-Murphy elements



    The algebra of admissible set partitions



    The Stanley-Féray formula and Kerov polynomials



    New observables of Young diagrams



    The Stanley-Féray formula for characters of symmetric groups



    Combinatorics of the Kerov polynomials



    IV Models of random Young diagrams



    Representations of the infinite symmetric group



    Harmonic analysis on the Young graph and extremal characters



    The bi-infinite symmetric group and the Olshanski semigroup 



    Classification of the admissible representations



    Spherical representations and the GNS construction



    Asymptotics of central measures



    Free quasi-symmetric functions



    Combinatorics of central measures



    Gaussian behavior of the observables



    Asymptotics of Plancherel and Schur-Weyl measures



    The Plancherel and Schur-Weyl models


    Biography

    Meliot, Pierre-Loic