Prove that unit disk/~ is homeomorphic to $S^2$
36700
Quotient space of closed unit ball and the unit 2-sphere $S^2$
48740
What is the homeomorphism between a disk and an ellipse?
82814
Homework question on whether two quotient spaces are homeomorphic
87723
Show a holomorphic function on unit disc with with $|f'(z) - f'(0)| < |f'(0)|$ is injective
108846
Estimate of analytic function in a unit disk
91878
Homeomorphism of the Disk
35569
Prove that $[0,1]$ isn't homeomorphic to $\mathbb{R}$
42988
Complex polynomial and the unit circle
15797
Holomorphic function having finitely many zeros in the open unit disc
44132
Let $f$ be an analytic isomorphism on the unit disc $D$, find the area of $f(D)$
126463
Can open sets and closed sets of $\mathbb{R}^n$ be homeomorphic?
140968
Proof for Property of Complex Numbers
27746
Autohomeomorphism of the unit disk which is constant on the boundary, and which takes 0 to a prescribed point
26197
$B^n/S^{n-1}$ is homeomorphic to $S^n$
32555
Prove: The weak closure of the unit sphere is the unit ball.
29276
technique of proving continuity complex function
117508
Prove that the closed unit ball of $L^2[a,b]$ is closed in $L^1[a,b]$