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Preface | |
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Groups | |
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Symbols and the group property | |
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Definition of a group | |
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The multiplication table | |
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Powers, products, generators | |
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Subgroups, cosets, classes | |
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Invariant subgroups. The factor group | |
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Homomorphisms and isomorphisms | |
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Elementary concept of a representation | |
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The direct product | |
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The algebra of a group | |
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Lattices and Vector Spaces | |
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Lattices. One dimension | |
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Lattices. Two and three dimensions | |
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Vector spaces | |
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n-Dimensional space. Basis vectors | |
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Components and basis changes | |
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Mappings and similarity transformations | |
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Representations. Equivalence | |
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Length and angle. The metric | |
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Unitary transformations | |
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Matrix elements as scalar products | |
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The eigenvalue problem | |
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Point and Space Groups | |
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Symmetry operations as orthogonal transformations | |
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The axial point groups | |
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The tetrahedral and octahedral point groups | |
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Compatibility of symmetry operations | |
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Symmetry of crystal lattices | |
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Derivation of space groups | |
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Representations of Point and Translation Groups | |
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Matrices for point group operations | |
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Nomenclature. Representations | |
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Translation groups. Representations and reciprocal space | |
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Irreducible Representations | |
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Reducibility. Nature of the problem | |
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Reduction and complete reduction. Basic theorems | |
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The orthogonality relations | |
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Group characters | |
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The regular representation | |
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The number of distinct irreducible representations | |
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Reduction of representations | |
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Idempotents and projection operators | |
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The direct product | |
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Applications Involving Algebraic Forms | |
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Nature of applications | |
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Invariant forms. Symmetry restrictions | |
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Principal axes. The eigenvalue problem | |
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Symmetry considerations | |
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Symmetry classification of molecular vibrations | |
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Symmetry coordinates in vibration theory | |
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Applications Involving Functions and Operators | |
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Transformation of functions | |
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Functions of Cartesian coordinates | |
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Operator equations. Invariance | |
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Symmetry and the eigenvalue problem | |
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Approximation methods. Symmetry functions | |
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Symmetry functions by projection | |
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Symmetry functions and equivalent functions | |
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Determination of equivalent functions | |
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Applications Involving Tensors and Tensor Operators | |
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Scalar, vector and tensor properties | |
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Significance of the metric | |
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Tensor properties. Symmetry restrictions | |
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Symmetric and antisymmetric tensors | |
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Tensor fields. Tensor operators | |
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Matrix elements of tensor operators | |
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Determination of coupling coefficients | |
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Representations carried by harmonic functions | |
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Alternative bases for cubic groups | |
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Index | |