0. Introduction -- 1. Terminologies and notations -- 2. Normal forms -- 3. Alexander polynomials (I) -- 4. Alexander polynomials (II) -- 5. Split links -- 6. Symmetric polynomials -- 7. Alexander polynomials (III) -- 8. Braid index -- 9. Signature of links (I) -- 10. Signature of links (II) -- 11. Signature of links (III) -- 12. Torus links -- 13. ][sub(i)] ][sub(j)] -- 14. Classification of link types in ][sub(i)] (i 6) -- 15. Link type invariant for ][sub(6)] -- 16. Partial classification of link types in ][sub(6)] -- 17. Braid index of product links
18. Product links in ][sub(i)] (i 6) -- 19. Proof of Theorem 17.1 (I) -- 20. Proof of Theorem 17.1 (II) -- 21. Proof of Theorem 17.1 (Conclusion) -- Appendix I: Braid index of classical knots -- Appendix II: Table of the braid index -- Appendix III: Braid index of 9[sub(20)] -- References