No, of course not. But he believes that the surface of the Earth is a one-connected, closed, compact, two-dimensional manifold without an edge, homeomorphic to a two-dimensional sphere. :D:D:D
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No, of course not. But he believes that the surface of the Earth is a one-connected, closed, compact, two-dimensional manifold without an edge, homeomorphic to a two-dimensional sphere. :D:D:D