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Wyświetlanie pozycji 1-1 z 1
An alternative Cauchy equation almost everywhere
(2000)
Let (S, +) be a commutative semigroup and let ζ be a proper left translation invariant σ-ideal in S. Suppose that f : S → R satisfies
|f(x + y)| = |f(x) + f(y)| Ω(ζ)-almost everywhere in S x S.
We prove that there exists, ...