Why can't a $C^1$-class mapping with nonzero derivative fill a square?
72115
Why isn't there a continuously differentiable surjection from $I \to I \times I$?
11319
Is $M=\{(x,|x|): x \in (-1, 1)\}$ not a differentiable manifold?
34206
Quadratic form under $\mathbb{C}$ finite-dimension vector space always have a nonzero vector that yields zero?
69845
Construct a real function with is exactly $C^2$ such that its first derivative does not vanish everywhere
67625
$C([0, 1])$ is not complete with respect to the norm $\lVert f\rVert _1 = \int_0^1 \lvert f (x) \rvert \,dx$
104257
$C^1$ functions on an open connected set and local Lipschitz continuity
30036
Function in $H^1$, but not continuous
90780
Why does implicit differentiation work on non-functions?
33488
A uniformly continuous function such that the derivative is not bounded and is not defined on a compact?
6227
Showing diffeomorphism between $S^1 \subset \mathbb{R}^2$ and $\mathbb{RP}^1$
15175
When does a Möbius transformation map $\Im(z)>0$ to itself?
56429
Extension of partial derivatives and the definition of $C^k(\overline{\Omega})$
151354
Why are there no non-trivial regular maps $\mathbb{P}^n \to \mathbb{P}^m$ when $n > m$?
138784
Is the differentiation operator an open mapping?
154837
mapping properties of $(1−z)^i$
142174
Nonexistence of an injective $C^1$ map between $\mathbb R^2$ and $\mathbb R$
121198
$W^{1,1}(\mathbb{R}^n)$ is not compactly embedded in $L^1(\mathbb{R}^n)$?