Bijection Partition identity
53194
Prove : $p$(n│even number of ODD parts)=$p$(n│distinct parts ,number of ODD parts is even )
36388
How to derive this Combinatorial identity
46971
Number of surjections from $\{1,...,m\}$ to $\{1,...,n\}$
39724
Combinatorial Identities
13453
Bijection map from a set of subgroup to another set of subgroup under some condition.
149686
Combinatorics and trigonometry identity
47592
Integer partitions in all orderings
40566
Counting surjective functions
53168
Surjective, Injective, Bijective Functions from $\mathbb Z$ to itself
130137
How to define a Bijection between $(A^B)^C$ and $A^{B \times C}$
71564
Combinatorial proof of identity involving central binomial coefficients
31391
bijection between $\mathbb{N}$ and $\mathbb{N}\times\mathbb{N}$
73224
number of ordered partitions of integer
15666
explanation for a combinatorial identity involving the binomial coefficient
14277
Proving $f(x)=x\cdot |x|$ is a bijection
156383
Proving a combinatorial identity without double counting
41593
Use of Bijection for computation