Subspaces being homeomorphic implies complements being homeomorphic?
13993
Can we prove $ℝ^n ∖ \{\text{straight line}\}$ and $ℝ^n ∖ \text{\{an axis\}}$ homeomorphic by proving their complements homeomorphic?
121047
Proof: Sum of dimension of orthogonal complement and vector subspace
143831
Showing $\mathbb{Q}$ is homeomorphic to $\mathbb{Q}^2$
148187
Question regarding one-point compactification and homeomorphisms
134070
$g$ a restriction of a homeomorphic function $f$, $g$ also homeomorphic?
19396
For subspaces, if $N\subseteq M_1\cup\cdots\cup M_k$, then $N\subseteq M_i$ for some $i$?
145952
Example of a closed subspace of a Banach space which is not complemented?
128730
Open subspaces of locally compact Hausdorff spaces are locally compact
33140
Two non-homeomorphic spaces with continuous bijective functions in both directions
7678
Show "countable complement topology" is a topology
19289
complement of a set and its measure
18334
Equivalence between CH and existence of certain sets in $\mathbb{R}^2$
70413
A vector space over $R$ is not a countable union of proper subspaces
95321
Subspaces of all real-valued continuous functions on $\mathbb{R}^1$
18034
Is there an equivalence relation of which the quotient topology is homeomorphic to codomain of a quotient map?
77563
Homeomorphism between spaces equipped with cofinite topologies
11301
Union of two vector subspaces not a subspace?