Codex Wiki
OurBigBook.com
Site
Source code
Bounded-displacement permutation of the natural numbers
Home
Mathematics
Area of mathematics
Combinatorics
Permutation
OurBigBook.com
Words: 38
A permutation
σ
of
N
has displacement at most one when
∣
σ
(
j
)
−
j
∣
≤
1
. Such a permutation is a disjoint collection of fixed points and adjacent transpositions, so independently swapping the pairs
(
2
n
−
1
,
2
n
)
already gives uncountably many examples.
Ancestors
(5)
Permutation
Combinatorics
Area of mathematics
Mathematics
Home