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math.GN2003★ 20 cited
A compact group which is not Valdivia compact
Wieslaw Kubiś, Vladimir Uspenskij
A compact space is {\em Valdivia compact} if it can be embedded in a Tikhonov cube in such a way that the intersection is dense in , where is the sigma-pr…
math.GN2003★ 1 cited
The Urysohn universal metric space is homeomorphic to a Hilbert space
Vladimir Uspenskij
The Urysohn universal metric space U is characterized up to isometry by the following properties: (1) U is complete and separable; (2) U contains an isometric copy of every separab…