# Variation of a complex charge

#### Fermat

##### Active member
Let (X,R) be a measure space. $$\displaystyle v=u_{1}+iu_{2}$$ be a complex charge. Find the variation of v when $$\displaystyle u_{1}, u_{2}$$ are positive disjunctive charges.

Does disjunctive charges mean that there is a partition A, B of X such that $$\displaystyle u_{1}(A)= u_{2}(B)=0$$?