length: Various vector-like utilities for permutation objects.

In permutations: The Symmetric Group: Permutations of a Finite Set

Various vector-like utilities for permutation objects.

Description

Various vector-like utilities for permutation objects such as length, names(), etc

Usage

## S3 method for class 'word'
length(x)
## S3 replacement method for class 'permutation'
length(x) <- value
## S3 method for class 'word'
names(x)
## S3 replacement method for class 'word'
names(x) <- value

Arguments

x	permutation object
value	In function names<-.word(), the new names

Details

These functions have methods only for word objects; cycle objects use the methods for lists. It is easy to confuse the length of a permutation with its size.

It is not possible to set the length of a permutation; this is more trouble than it is worth.

Author(s)

Robin K. S. Hankin

See Also

size

Examples

x <- rperm(5,9)
x
names(x) <- letters[1:5]
x

megaminx
length(megaminx)   # the megaminx group has 12 generators, one per face.
size(megaminx)     # the megaminx group is a subgroup of S_129.

names(megaminx) <- NULL   # prints more nicely.
megaminx

permutations documentation built on Sept. 11, 2024, 6:10 p.m.