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Decomposition of group-valued additive set functions

Tim Traynor (1972)

Annales de l'institut Fourier

Let m be an additive function on a ring H of sets, with values in a commutative Hausdorff topological group, and let K be an ideal of H . Conditions are given under which m can be represented as the sum of two additive functions, one essentially supported on K , the other vanishing on K . The result is used to obtain two Lebesgue-type decomposition theorems. Other applications and the corresponding theory for outer measures are also indicated.

Dense sums

G. Fano, G. Gallavotti (1972)

Annales de l'I.H.P. Physique théorique

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