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Published online by Cambridge University Press: 24 October 2008
The product of two distributions f and g on the open interval (a, b), where −∞ ≤ a < b ∞, was defined in (1) as the limit of the sequence {fn·gn} provided this sequence is regular in (a, b), where
for n = 1, 2, … and ρ is a fixed infinitely differentiable function having the following properties: