Special functions
ConceptSKOS conceptSpecial function
Polygamma function
http://libmeta.ru/thesaurus/concept/specfunc_95
Definition
$\psi ^{(n)}(z)=\frac{d^{n}}{dz^{n}}\psi (z) $
Definition article
$\psi ^{(n)}(z)=\frac{d^{n}}{dz^{n}}\psi (z) $
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| notation | specfunc_95 |
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