AsUnitalAlgebra( D )
AsUnitalAlgebra( F, D )
Let D be a domain.
AsUnitalAlgebra returns a unital algebra A over
the field F such that the set of elements of D is the same as the set
of elements of A if this is possible.
If D is an algebra the argument F may be omitted, the coefficients
field of D is taken as coefficients field of F in this case.
If D is a list of algebra elements these elements must form a unital algebra. Otherwise an error is signalled.
gap> a:= [ [ 1, 0 ], [ 0, 0 ] ] * Z(2);; gap> AsUnitalAlgebra( GF(2), [ a, a^0, 0*a, a^0-a ] ); UnitalAlgebra( GF(2), [ [ [ 0*Z(2), 0*Z(2) ], [ 0*Z(2), Z(2)^0 ] ], [ [ Z(2)^0, 0*Z(2) ], [ 0*Z(2), 0*Z(2) ] ] ] )
Note that this function returns a parent algebra or a subalgebra of a
parent algebra depending on D. In order to convert a subalgebra
into a parent algebra you must use
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