Anthony Hurier
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View article: New analytic continuations for the Appell $F_4$ series from quadratic transformations of the Gauss $_{2}F_1$ function
New analytic continuations for the Appell $F_4$ series from quadratic transformations of the Gauss $_{2}F_1$ function Open
We present new analytic continuation formulas for the Appell $F_4(a,b;c,d;x,y)$ double hypergeometric series where $d=a-b+1$, which allows quadratic transformations of the Gauss ${}_2F_1$ hypergeometric function to be used in the intermedi…