additive operator splitting的用法和样例：
- An operator splitting numerical method combining finite difference method (FDM) and finite element method(FEM) is proposed in this paper by using boundary-fitted coordinate system.
- The dereference operator has a higher precedence than the addition operator.
- The old farm has been split up into house lots.
- In this paper we characterize the forms of additive operators preserving adjugate matrices on the space of upper triangular matrices over a field when n=3.