unital
containing a multiplicative identity element, i.e(of an algebra) containing a multiplicative identity element (or unit), i.e. an element 1 with the property 1x=x1=x for all elements x of the algebra.
containing a multiplicative identity element, i.e(of an algebra) containing a multiplicative identity element (or unit), i.e. an element 1 with the property 1x=x1=x for all elements x of the algebra.