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You are here: Home ▶ Mathematics ▶ Group Theory

Group Theory

March 24, 2006

Group Theory

Group Theory by Predrag Cvitanovic can be downloaded in pdf and postscript formats free of charge. If classical Lie groups preserve bilinear vector norms, what Lie groups preserve trilinear, quadrilinear, and higher order invariants?

Book Description

Answering this question from a fresh and original perspective, Predrag Cvitanovic takes the reader on the amazing, four-thousand-diagram journey through the theory of Lie groups. This book is the first to systematically develop, explain, and apply diagrammatic projection operators to construct all semi-simple Lie algebras, both classical and exceptional.

The invariant tensors are presented in a somewhat unconventional, but in recent years widely used, “birdtracks” notation inspired by the Feynman diagrams of quantum field theory. Notably, invariant tensor diagrams replace algebraic reasoning in carrying out all group-theoretic computations. The diagrammatic approach is particularly effective in evaluating complicated coefficients and group weights, and revealing symmetries hidden by conventional algebraic or index notations. The book covers most topics needed in applications from this new perspective: permutations, Young projection operators, spinorial representations, Casimir operators, and Dynkin indices. Beyond this well-traveled territory, more exotic vistas open up, such as “negative dimensional” relations between various groups and their representations. The most intriguing result of classifying primitive invariants is the emergence of all exceptional Lie groups in a single family, and the attendant pattern of exceptional and classical Lie groups, the so-called Magic Triangle. Written in a lively and personable style, the book is aimed at researchers and graduate students in theoretical physics and mathematics.

Table of Contents

  • Introduction
  • Invariants and reducibility
  • Diagrammatic notation
  • Recouplings
  • Permutations
  • Casimir operators
  • Group integrals
  • Unitary groups
  • Orthogonal groups
  • Spinors
  • Symplectic groups
  • Negative dimensions
  • Spinors’ symplectic sisters
  • SU(n) family of invariance groups
  • G2 family of invariance groups
  • E8 family of invariance groups
  • E6 family of invariance groups
  • F4 family of invariance groups
  • E7 family and its negative-dimensional cousins
  • Exceptional magic

Download Free PDF / Read Online

Author(s): Predrag Cvitanovic
Format(s): PDF
File size: 2.33 MB
Number of pages: 289
Link: Download.

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