Keywords. Tight, contact structure, lens spaces, solid tori
AMS subject classification. Primary: 57M50. Secondary: 53C15.
Submitted to GT on 6 October 2000. Paper accepted 14 October 2000. Paper published 14 October 2000.
Note: (25 October 2001) There are errors in this
paper. The two incorrect statements are Proposition 5.8 and Part I of
Theorem 2.2 which is a corollary of 5.8.
The author has supplied an erratum which precisely describes the mistake and discusses what can be salvaged and what cannot.
The erratum can be downloaded (see below) and should be read alongside the paper.
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