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New posts in General Topology
Why does the definition of topological space require that the empty set be open?
May 10, 2021
Confusion on why 2 equivalence classes are either equal or disjoint
May 10, 2021
Why do we care about the Hilbert Cube?
May 10, 2021
Examples of almost compact spaces.
May 10, 2021
Existence of a path between two sides of a square, which is contained in the intersection of two open subsets of it
May 10, 2021
The subspace $C$ of the space $(X,d)$ is compact
May 10, 2021
For any $S \subseteq \mathbf{R}$, if $\partial S$ denotes the boundary of $S$, prove that $\partial(\partial S) \subseteq \partial S$.
May 10, 2021
What is an open set in a topological space?
May 10, 2021
Is completeness over a normed space invariant under linear homeomorphisms?
May 10, 2021
In ZF, does the ring of continuous functions $C([0,1], \mathbb{R})$ have prime ideals which is not maximal?
May 10, 2021
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