zero semigroup造句

例句与造句

1. A semigroup in which every element is a left zero element is called a "'left zero semigroup " '.
2. A semigroup in which every element is a right zero element is called a "'right zero semigroup " '.
3. One of these non-commutative bands results from adjoining an identity element to " LO " 2, the left zero semigroup with two elements ( or, dually, to " RO " 2, the right zero semigroup ).
4. One of these non-commutative bands results from adjoining an identity element to " LO " 2, the left zero semigroup with two elements ( or, dually, to " RO " 2, the right zero semigroup ).
5. It's difficult to find zero semigroup in a sentence. 用zero semigroup造句挺难的