Stability of injective, surjective and bijective functions under composition
63146
Proof of properties of injective and surjective functions.
38286
Proving the Cantor Pairing Function Bijective
124003
Composition of adjoint functors
40566
Counting surjective functions
56234
Isomorphism $f$ preserves the order of an element?
13193
Does a inverse function need to be either surjective or injective?
111689
Surjective, but not injective endomorphism
73526
The equivalence of "Every surjection has a right inverse" and the Axiom of Choice
14277
Proving $f(x)=x\cdot |x|$ is a bijection
86107
Map bounded if composition is bounded
124374
A bijective function between a square and its side
146436
Cardinality of the set of bijective functions on $\mathbb{N}$?
40868
Composition of two functions - Bijection
124847
Is the set of surjective functions from $\mathbb{N}$ to $\mathbb{N}$ uncountable?
52798
Finding counterexamples: bijective continuous functions that are not homeomorphisms
110142
1-1 Function Composition
53101
Is it true that the relation |A| < |B| is a sufficient condition for claiming that $f$ is a bijection?