Is $\Bbb Q$ homeomorphic to $\Bbb Q^2$?
70198
Why this two spaces do not homeomorphic?
57166
Showing that $\Bbb R[x] / \langle x^2 + 1 \rangle$ is isomorphic to $\Bbb C$ question
82458
Homeomorphism between the unit disc and the unit square
84189
Is $\mathbb{C}$ equal to $\mathbb{R}^2$?
140628
Are $(\Bbb R,+)$ and $(\Bbb Q, +)$ elementary equivalent?
82262
minimal polynomial of nth root of 2 over $\mathbb Q$
26197
$B^n/S^{n-1}$ is homeomorphic to $S^n$
2348
Show that the sphere, S, and $\mathbb{R}^2$ is not homeomorphic
36631
Is $[0,1] \cap \Bbb Q$ a compact subset of $\Bbb Q$?
144246
Subset of $\mathbb{R}^n$ homeomorphic to $\mathbb{R}^n$
128301
Homeomorphism from square to unit circle
157296
Homeomorphism between the Unit Disc and Complex Plane
41069
Justifying $\,\Bbb{Z}[i]/\langle 2\rangle\cong \Bbb{Z}[X]/\langle X^2+1,2\rangle\cong \Bbb{F}_2[X]/\langle X^2+1\rangle$
157597
Homeomorphism between $\mathbb{Q}$ and $\mathbb{Q}(>0)$, and $\mathbb{Q}(\ge 0)$
128711
$(\Bbb Z\oplus \Bbb Z)[X] \not\cong \Bbb Z[X]\oplus \Bbb Z[X]\,$?
135863
Is the graph of a continuous function homeomorphic to its domain?
121708
$S := \{x \in \Bbb R^3: ||x||_2 = 1 \}$ and $T: S^2 \to \Bbb R$ is a continuous function. Is $T$ injective?