How to show that $\sin:\Bbb C\to\Bbb C$ is surjective
73047
Proving surjectivity of $\cos(z)$ and $\sin(z)$ and find all $z : \cos(z) \in \mathbb R$ and all $z: \sin(z) \in \mathbb R$
136842
$|x-f(x)|<5777$, Show that $f$ is surjective
110944
Proving that $AB-BA=cI$ for nontrivial $c \in \mathbb{C}$
27188
Bijection between $\mathbb{R}$ and $\mathbb{R}/\mathbb{Q}$
45991
Why $f\colon \mathbb{Z}_n^\times \to \mathbb{Z}_m^\times$ is surjective?
143072
Proving $|\sin x - \sin y| < |x - y|$
145104
$T:$ $\mathbb{C}$ $\to$ $\mathbb{C}$ by $T(z)=\lambda z + \mu \bar{z}$ for every $z \in \mathbb{C}$
102918
Prove $\sin x$ is uniformly continuous on $\mathbb R$
56097
If $A$ and $AB-BA$ commute, show that $AB-BA$ is nilpotent
94425
What is $\sup(\sin(n))$?
148500
Understanding this theorem and how to go about proving it surjectivity?
93017
Isomorphism between $\Bbb R$ and $\Bbb R(X)$?
64866
Proving a Composition of Functions is Bijective
16092
How to prove that the composition of two surjective functions is surjective
33387
Proof that $n\Bbb Z \leq \Bbb Z$ and are the only subgroups of $\Bbb Z$
15909
Bijection from $\mathbb R$ to $\mathbb {R^N}$
104757
If $f \circ g$ is surjective, then f is surjective