Robuta

https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2012.01.001/ The Reeb foliation arises as a family of Legendrian submanifolds at the end of a deformation of the... reeb foliationarisesfamilylegendriansubmanifolds https://mathworld.wolfram.com/ReebFoliation.html Reeb Foliation -- from Wolfram MathWorld The Reeb foliation of the hypersphere S^3 is a foliation constructed as the union of two solid tori with common boundary. reeb foliationwolfram mathworld