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math.GN2012
Selections, games and metrisability of manifolds
David Gauld
In this note we relate some selection principles to metrisability and separability of a manifold. In particular we show that , $\sf{S}_{fin}(Ω,…
math.GN2012
Exotic Differential Structures in Dimension 2
Sunanda Dikshit, David Gauld
It is known that the long line supports many non-diffeomorphic differential structures. We show that the long plane supports a similar number of exotic differential…