Circles and lines on the complex plane correspond to circles on Riemann sphere.
56960
How can I show that circles in the complex plane correspond to circles on the Riemann sphere? How about lines?
26566
Composition of two Riemann integrable functions
132831
A circle with infinite radius is a line
37589
Connectedness of points with both rational or irrational coordinates in the plane?
157946
Elementary derivation of certian identites related to the Riemannian Zeta function and the Euler-Mascheroni Constant
37056
A Polygon is inscribed in a circle $\Gamma$
84686
Geometric Description Of a Set In The Complex Plane
59123
Mapping circles via inversion in the complex plane
27933
Show that unit circle is not homeomorphic to the real line
42988
Complex polynomial and the unit circle
55070
Fundamental group of complement of $n$ lines through the origin in $\mathbb{R}^3$
123304
Locus of the points on complex plane
148233
Proof that every circle has the ratio of $\pi$
23414
Topologist's Sine Curve: A rigorous proof of why $\overline{S} = S \cup V$
95473
Complex Numbers Geometry
27581
Topologist's sine curve is connected
99829
If a plane is divided by $n$ lines, then it is possible to color the regions formed with only two colors.