# Definition:dualHahn

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The LaTeX DLMF and DRMF macro \dualHahn represents the Dual Hahn polynomial.

This macro is in the category of polynomials.

In math mode, this macro can be called in the following ways:

\dualHahn{n} produces $\displaystyle {\displaystyle \dualHahn{n}}$
\dualHahn{n}@{\lambda(x)}{\gamma}{\delta}{N} produces $\displaystyle {\displaystyle \dualHahn{n}@{\lambda(x)}{\gamma}{\delta}{N}}$
\dualHahn{n}@@{\lambda(x)}{\gamma}{\delta}{N} produces $\displaystyle {\displaystyle \dualHahn{n}@@{\lambda(x)}{\gamma}{\delta}{N}}$

These are defined by $\displaystyle {\displaystyle \dualHahn{n}@{\lambda(x)}{\gamma}{\delta}{N}:= \HyperpFq{3}{2}@@{-n,-x,x+\gamma+\delta+1}{\gamma+1,-N}{1} }$

## Symbols List

${\displaystyle {\displaystyle R_{n}}}$ : dual Hahn polynomial : http://dlmf.nist.gov/18.25#T1.t1.r5
${\displaystyle {\displaystyle {{}_{p}F_{q}}}}$ : generalized hypergeometric function : http://dlmf.nist.gov/16.2#E1