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Sharpness conjecture for Cesàro means of Jacobi expansions on the parabolic biangle
Let $B$ be the parabolic biangle, let $W_B^{\alpha,\beta}$ be the corresponding orthogonality weight, and let the $(C,\delta)$ means be formed from the orthogonal expansions with r…
Conjectureopencesaro-means jacobi-expansions orthogonal-polynomialsarXiv posted 2 days ago

Sharpness conjecture for Cesàro means of Jacobi expansions on the parabolic biangle