例句與造句

1. An additive map does not necessarily preserve any other structure of the object, for example the product operation of a ring.
2. Loeb's construction starts with a finitely additive map ? from an internal algebra " A " of sets to the non-standard reals.
3. A simple argument, involving only elementary algebraic manipulation, demonstrates that the set of additive maps " f : \ mathbb { Q } \ to \ mathbb { Q } " is identical to the set of linear maps.
4. Instead the algebra " A " has the property that if a set in it is the union of a countable family of elements of " A ", then the set is the union of a finite number of elements of the family, so in particular any finitely additive map ( such as ? ) from " A " to the extended reals is automatically countably additive.
5. It's difficult to find additive map in a sentence. 用additive map造句挺難的