Abstract
We show that smooth foliated manifolds are determined by their automorphism groups in the following sense. Theorem A Let 1 ≤ k ≤ ∞ and X 1, X 2 be second countable Ck foliated manifolds. Denote by H k(X i ) the groups of Ck auto-homeomorphisms of X i which take every leaf of X i to a leaf of X i . Suppose that \({\varphi}\) is an isomorphism between H k(X 1) and H k(X 2).Then there is a homeomorphism τ between X 1 and X 2 such that: (1) \({\varphi(g) = \tau {\raise1pt\hbox{\scriptsize\kern1.5pt$\circ$\kern1.5pt}} g {\raise1pt\hbox{\scriptsize\kern1.5pt$\circ$\kern1.5pt}} \tau^{-1}}\) for every \({g \in H^k(X)}\) and (2) τ takes every leaf of X 1 to a leaf of X 2. Theorem 1 combined with a theorem of Rybicki (Soochow J Math 22:525–542, 1996) yields the following corollary. Corollary B For i = 1, 2 let X 1, X 2 be second countable C∞ foliated manifolds. Suppose that \({\varphi}\) is an isomorphism between H ∞(X 1) and H ∞(X 2).Then there is a C∞ homeomorphism τ between X 1 and X 2 such that: (1) \({\varphi(g) = \tau {\raise1pt\hbox{\scriptsize\kern1.5pt$\circ$\kern1.5pt}} g {\raise1pt\hbox{\scriptsize\kern1.5pt$\circ$\kern1.5pt}} \tau^{-1}}\) for every \({g \in H^{\infty}(X)}\) and (2) τ takes every leaf of X 1 to a leaf of X 2.
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This work is supported by ISF grant 508/06.
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Rubin, M. A reconstruction theorem for smooth foliated manifolds. Geom Dedicata 150, 355–375 (2011). https://doi.org/10.1007/s10711-010-9509-4
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DOI: https://doi.org/10.1007/s10711-010-9509-4