# Category:Additive Function is Strongly Additive

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This category contains pages concerning **Additive Function is Strongly Additive**:

Let $\SS$ be an algebra of sets.

Let $f: \SS \to \overline \R$ be an additive function on $\SS$.

Then $f$ is also strongly additive.

That is:

- $\forall A, B \in \SS: \map f {A \cup B} + \map f {A \cap B} = \map f A + \map f B$

## Pages in category "Additive Function is Strongly Additive"

The following 3 pages are in this category, out of 3 total.