The identity permutation leaves every element fixed
1 2 3 4 5 6 7 8
Object to be tested
The identity permutation is problematic because it potentially has zero size.
id is a cycle as this is more convenient
than a zero-by-one matrix.
is.id() returns a Boolean with
TRUE if the
corresponding element is the identity, and
FALSE otherwise. It
dispatches to either
is.id.list() tests a cyclist for identityness.
The identity permutations documented here are distinct from the null
permutations documented at
Robin K. S. Hankin
1 2 3 4 5 6 7
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.