WordReference Random House Unabridged Dictionary of American English © 2025
count′ably ad′ditive func′tion, [Math.]
- Mathematicsa set function that upon operating on the union of a countable number of disjoint sets gives the same result as the sum of the functional values of each set. Cf. finitely additive function.
'countably additive function' also found in these entries (note: many are not synonyms or translations):