Geodesic
On topological classification of non-archimedean Fréchet spaces
Czechoslovak Mathematical Journal, Tome 54 (2004) no. 2, pp. 457-463.

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We prove that any infinite-dimensional non-archimedean Fréchet space $E$ is homeomorphic to $D^{\mathbb{N}}$ where $D$ is a discrete space with $\mathop {\mathrm card}(D)=\mathop {\mathrm dens}(E)$. It follows that infinite-dimensional non-archimedean Fréchet spaces $E$ and $F$ are homeomorphic if and only if $\mathop {\mathrm dens}(E)= \mathop {\mathrm dens}(F)$. In particular, any infinite-dimensional non-archimedean Fréchet space of countable type over a field $\mathbb{K}$ is homeomorphic to the non-archimedean Fréchet space $\mathbb{K}^{\mathbb{N}}$.
Classification : 46A04, 46S10
Keywords: non-archimedean Fréchet spaces; homeomorphisms 
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     title = {On topological classification of non-archimedean {Fr\'echet} spaces},
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Śliwa, Wiesław. On topological classification of non-archimedean Fréchet spaces. Czechoslovak Mathematical Journal, Tome 54 (2004) no. 2, pp. 457-463. http://geodesic.mathdoc.fr/item/CMJ_2004__54_2_a17/