Existence d'un feuilletage positivement transverse \`a un hom\'eomorphisme de surface
Abstract
Let F be a homeomorphism of an oriented surface M that is isotopic to the identity. Le Calvez proved that if F admits a lift without fixed points to the universal covering of M, then there exists a topological foliation of M transverse to the dynamics. We generalize this result to the case where the lift of F has fixed points. We obtain a singular topological foliation whose singularities are fixed points of F. Le Calvez a montr\'e que si F est un hom\'eomorphisme isotope \`a l'identit\'e d'une surface M admettant un rel\`evement au rev\etement universel n'ayant pas de points fixes, alors il existe un feuilletage topologique de M transverse \`a la dynamique. Nous montrons que ce r\'esultat se g\'en\'eralise au cas o\`u le rel\`evement de F admet des points fixes. Nous obtenons alors un feuilletage topologique singulier transverse \`a la dynamique dont les singularit\'es sont un ensemble ferm\'e de points fixes de F.
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.