Let be an -Manifold and let denote a Partition of into Disjoint path-connected Subsets. Then if is a Foliation of , each is called a leaf and is not necessarily closed or compact.

**References**

Rolfsen, D. *Knots and Links.* Wilmington, DE: Publish or Perish Press, p. 284, 1976.

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1999-05-26