object invariant造句

The inverse ( or converse ) of a relation, where if and only if, induces a contravariant functor that leaves the objects invariant but reverses the arrows and composition.
An object invariant, or representation invariant, is a computer programming construct consisting of a set of invariant properties that remain uncompromised regardless of the state of the methods may, therefore, always reference the object without the risk of making inaccurate presumptions.
It's difficult to find object invariant in a sentence. 用object invariant造句挺难的