Notes on Lie algebras
著者
書誌事項
Notes on Lie algebras
（Universitext）
Springer-Verlag, c1990
Rev. ed
- : us
- : gw
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注記
Bibliography: p. [153]-154
"First edition of Notes on Lie Algebras was published in 1969 by Van Nostrand"--T.p. verso
"Revised edition of Notes on Lie Algebras"--Back cover
Includes indexes
内容説明・目次
- 巻冊次
-
: us ISBN 9780387972640
内容説明
(Cartan sub Lie algebra, roots, Weyl group, Dynkin diagram, . . . ) and the classification, as found by Killing and Cartan (the list of all semisimple Lie algebras consists of (1) the special- linear ones, i. e. all matrices (of any fixed dimension) with trace 0, (2) the orthogonal ones, i. e. all skewsymmetric ma trices (of any fixed dimension), (3) the symplectic ones, i. e. all matrices M (of any fixed even dimension) that satisfy M J = - J MT with a certain non-degenerate skewsymmetric matrix J, and (4) five special Lie algebras G2, F , E , E , E , of dimensions 14,52,78,133,248, the "exceptional Lie 4 6 7 s algebras" , that just somehow appear in the process). There is also a discus sion of the compact form and other real forms of a (complex) semisimple Lie algebra, and a section on automorphisms. The third chapter brings the theory of the finite dimensional representations of a semisimple Lie alge bra, with the highest or extreme weight as central notion. The proof for the existence of representations is an ad hoc version of the present standard proof, but avoids explicit use of the Poincare-Birkhoff-Witt theorem. Complete reducibility is proved, as usual, with J. H. C. Whitehead's proof (the first proof, by H. Weyl, was analytical-topological and used the exis tence of a compact form of the group in question). Then come H.
目次
- 1 Generalities.- 1.1 Basic definitions, examples.- 1.2 Structure constants.- 1.3 Relations with Lie groups.- 1.4 Elementary algebraic concepts.- 1.5 Representations
- the Killing form.- 1.6 Solvable and nilpotent.- 1.7 Engel's theorem.- 1.8 Lie's theorem.- 1.9 Cartan's first criterion.- 1.10 Cartan's second criterion.- 1.11 Representations of A1.- 1.12 Complete reduction for A1.- 2 Structure Theory.- 2.1 Cartan subalgebra.- 2.2 Roots.- 2.3 Roots for semisimple g.- 2.4 Strings.- 2.5 Cartan integers.- 2.6 Root systems, Weyl group.- 2.7 Root systems of rank two.- 2.8 Weyl-Chevalley normal form, first stage.- 2.9 Weyl-Chevalley normal form.- 2.10 Compact form.- 2.11 Properties of root systems.- 2.12 Fundamental systems.- 2.13 Classification of fundamental systems.- 2.14 The simple Lie algebras.- 2.15 Automorphisms.- 3 Representations.- 3.1 The Cartan-Stiefel diagram.- 3.2 Weights and weight vectors.- 3.3 Uniqueness and existence.- 3.4 Complete reduction.- 3.5 Cartan semigroup
- representation ring.- 3.6 The simple Lie algebras.- 3.7 The Weyl character formula.- 3.8 Some consequences of the character formula.- 3.9 Examples.- 3.10 The character ring.- 3.11 Orthogonal and symplectic representations.- References.- Symbol Index.
- 巻冊次
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: gw ISBN 9783540972648
内容説明
This revised edition of Notes on Lie Algebras covers structuring, classification, and representations of semisimple Lie algebras, a classical field that has become increasingly important to mathematicians and physicists. The text's purpose is to introduce the student to the basic facts and their derivations using a direct approach in today's style of thinking and language. The main prerequisite for a clear understanding of the book is Linear Algebra, of a reasonably sophisticated nature. For this revised edition, errors have been eliminated, a number of proofs have been rewritten with more clarity, and some new material has been added.
目次
Contents: Generalities.- Structure Theory.- Representations.- Appendix.- References.- Index.- Symbol Index.
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