Even maps of any even degree
72054
Show that $\deg f$ is even when $n$ is odd.
106050
Finding a conformal map from the intersection of two disks to the unit disk.
154142
Finding a specific basis for an endomorphism
65472
From injective map to continuous map
79925
Infinitely many values of $x$ that satisfy the equations
129476
The trace map in a finite field.
43626
Open Mapping Theorem: counterexample
152927
seemingly nontrivial question about covering maps and evenly covered open sets
97713
How to get the upper triangular form for any linear map?
3217
Construction of uncountably many non-isomorphic linear (total) orderings of natural numbers
37841
Product of quotient maps and quotient space that is not Hausdorff
83493
Map an arbitrary triangle to the unit square
123259
Maps in Opposite Categories
127436
Conformal Maps onto the Unit Disc in $\mathbb{C}$
126060
Proving that a Euler Circuit has a even degree for every vertex
157623
A way to store potentially infinite 2D map data?
20547
Homeomorphism that maps given points to given points