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E81

[0KQ] Prerequisites:[0KM].Let \({\mathcal B}\) be a base for a topology \(𝜏\) on \(X\). Show that, given \(x∈ X\),

\[ \{ B∈ {\mathcal B} : x∈ B\} \]

is a fundamental system of neighbourhoods for \(x\) . [ [0KR]]

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Authors: "Mennucci , Andrea C. G." .
Bibliography
Book index
  • space, topological
  • topological space
  • base, (topology)
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