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Tabla de Contenidos:
  • 1. Introduction 2. Basic facts and notation 3. Definition of the semi-Fredholm elements, and of the index group and the index semigroup 4. Alternative characterizations of the Fredholm and semi-Fredholm elements 5. Definition of the index map $i$ 6. Properties of the index map $i$ 7. A representation of the index group and the index semigroup for relatively compact ideals 8. Examples 9. Definition of an index $\overline {i}$ for noncompact ideals 10. Properties of the index $\overline {i}$ 11. The maximal domain of continuity for the index 12. The closure of the semi-Fredholm components; the distance to each component.