Abstract
It is well-known that the setH of distribution functions on [0,∞] supplied with the convolution product * is a semigroup. We introduce a preorder on (H,*) with attractive algebraic properties. The corresponding equivalence relation ≈W extends the concept of tail-equivalence of distribution functions. We show that the idempotents of the factorsemigroupH W form a subsemigroup ofH W.
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Klüppelberg, C. Asymptotic ordering of distribution functions and convolution semigroups. Semigroup Forum 40, 77–92 (1990). https://doi.org/10.1007/BF02573252
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DOI: https://doi.org/10.1007/BF02573252