test whether a finite magma has a (two-sided) identity element - Maple Help

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Magma[Identity] - test whether a finite magma has a (two-sided) identity element

Calling Sequence

Identity( m )

Parameters

m

-

Array representing the Cayley table of a finite magma

Description

• 

The Identity command returns the identity element of a magma with identity. If the magma has no identity element, an exception is raised.

Examples

withMagma:

m:=1|2|3,2|3|1,3|1|2

m:=123231312

(1)

Identitym

1

(2)

See Also

HasIdentity, Magma


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