
doi: 10.1137/0514062
Paul Turan discovered that Legendre polynomials satisfy the inequality \[ P_n^2 - P_{n + 1} P_{n - 1} > 0\quad {\text{for }} - 1 0,\quad 0 < x < 1,\quad \frac{1}{2} < a \leq \beta \leq \alpha + 1.\]
Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.), ultraspherical polynomials, Inequalities for trigonometric functions and polynomials, Turan inequalities, Other special functions, q-ultraspherical polynomials
Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.), ultraspherical polynomials, Inequalities for trigonometric functions and polynomials, Turan inequalities, Other special functions, q-ultraspherical polynomials
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