PyRulez PyRulez 5, 2 2 gold badges 24 24 silver badges 75 75 bronze badges. In particular, it is invariant under homeomorphisms. Rhys Rhys 3, 10 10 silver badges 23 23 bronze badges. For a general topological space, it has no meaning. There are atleast 7, 7-spheres, I believe. I think you're talking about differentiable structures, and I'm not sure you actually know which question you want to ask. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. Featured on Meta.
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On the enumeration of circular maps with given number of edges. Authors Authors and affiliations M.
Deryagina A. Article First Online: 30 August This is a preview of subscription content, log in to check access. Tutte W. Theory Ser. B, 43 , — Mednykh A.
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