The Reeb foliation of the hypersphere is a foliation constructed as the union of two solid tori with common boundary.
Reeb Foliation
See also
Foliation, Reeb ComponentExplore with Wolfram|Alpha
References
Rolfsen, D. Knots and Links. Wilmington, DE: Publish or Perish Press, pp. 287-288, 1976.Referenced on Wolfram|Alpha
Reeb FoliationCite this as:
Weisstein, Eric W. "Reeb Foliation." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ReebFoliation.html