proving that a function from $\Bbb R^2$ to $\Bbb R^2$ is surjective
136842
$|x-f(x)|<5777$, Show that $f$ is surjective
109643
Prove that every isometry on $\mathbb{R}^2$ is bijective
124847
Is the set of surjective functions from $\mathbb{N}$ to $\mathbb{N}$ uncountable?
64866
Proving a Composition of Functions is Bijective
118622
Local diffeomorphism from $\mathbb R^2$ onto $S^2$
118049
Show that $\mathbb{R}^{\mathbb{R}} = U_{e} \oplus U_{o}$
63453
A proof of the fact that the Fourier transform is not surjective from $\mathcal{L}^1(\mathbb{R})$ to $C_0( \mathbb{R})$
84114
Does there exist a surjective homomorphism from $(\mathbb R,+)$ to $(\mathbb Q,+)$ ?
24585
Proving that $\mathbf{W}$+$\mathbf{W^{\perp}}$=$\mathbb{R^{n}}$
40566
Counting surjective functions
88857
Prove that Gauss map on M is surjective
141114
Question about a bijection between $\mathbb R$ and $\mathbb R \cup \{\infty\}$
49953
Proving that a function from $N\times N$ to $N$ is bijective.
57166
Showing that $\Bbb R[x] / \langle x^2 + 1 \rangle$ is isomorphic to $\Bbb C$ question
45991
Why $f\colon \mathbb{Z}_n^\times \to \mathbb{Z}_m^\times$ is surjective?
74453
Injective and Surjective Functions
64140
Find a bijection from $\mathbb R$ to $\mathbb R-\mathbb N$