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The Pochhammer notation (a)k (also called Pochhammer’s symbol) is supported by the binary operator POCHHAMMER(A,K). For a non-negative integer k, it is defined as (http://dlmf.nist.gov/5.2.iii)
(a)0 | = 1, | ||
(a)k | = a(a + 1)(a + 2)⋯(a + k − 1). | ||
For a≠0,±1,±2,…, this is equivalent to | |||
(a)k | = ![]() |
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