About topology in $R^n$
91991
How do I prove that two closed sets are separable?
62793
$\mathbb{R}$ with the lower limit topology is not second-countable
130361
Basis for a topology with a countable number of sets
129943
Torsion on $\pi_1(X)$, $X$ connected and open in $\mathbb{R}^n$
114437
Why is this the basis for the indiscrete topology?
144072
Are the spaces $\mathbb{H}^n$ and $\overline{\mathbb{R}}^n_+$ homeomorphic?
41047
Subspace Topology of a subset
133808
A doubt from Milnor's "Topology from a Differentiable Viewpoint".
151051
connectedness of uniform topology
88205
How can I define a topology on the empty set?
79213
Proof about a Topological space being arc connect
70576
Elementary proof that $\mathbb{R}^n$ is not homeomorphic to $\mathbb{R}^m$
84104
Definition of neighborhood and open set in topology
158221
Prob. 4 (a), Sec. 20 in Munkres' Topology, 2nd ed: Are these functions continuous in the product, uniform, and box topologies?
66239
Verifying that a certain collection of intervals of $\mathbb R$ forms a topology
47251
Non-compactness of $\mathbb{R}$ with the cocountable topology
108226
Are these bases for a topology?