Magma
IsRightIdentity
test whether an element of a magma is a right identity
Calling Sequence
Parameters
Description
Examples
Compatibility
IsRightIdentity( m, id )
m
-
Array; magma represented by its Cayley table
id
posint; candidate right identity element
The IsRightIdentity command determines whether an element id of a magma m is a right identity for m. It returns true if id is a right identity of m, and returns false otherwise. The element id is a right identity of m if x * id = x, for all x in m.
with⁡Magma:
m≔1|1|3,1|2|2,2|3|1
m≔113122231
IsRightIdentity⁡m,1
false
IsRightIdentity⁡m,2
true
IsRightIdentity⁡m,3
The Magma[IsRightIdentity] command was introduced in Maple 15.
For more information on Maple 15 changes, see Updates in Maple 15.
See Also
IsIdentity
IsLeftIdentity
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