A lens space is the 3-Manifold obtained by gluing the boundaries of two solid Tori together such that the meridian of the first goes to a -curve on the second, where a -curve has meridians and longitudes.

**References**

Rolfsen, D. *Knots and Links.* Wilmington, DE: Publish or Perish Press, 1976.

© 1996-9

1999-05-26