Abstract <p>The paper presents quadrature formulas for calculating integrals defined on the interval <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\((-1,1)\)</EquationSource> <!--LobJMat2561070Sahakyan-m1--> </InlineEquation> and containing the Jacobi weight function <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\({\left({1-x}\right)^{\alpha}}{\left({1+x}\right)^{\beta}}\)</EquationSource> <!--LobJMat2561070Sahakyan-m2--> </InlineEquation>. The exponents <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\alpha\)</EquationSource> <!--LobJMat2561070Sahakyan-m3--> </InlineEquation> and <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(\beta\)</EquationSource> <!--LobJMat2561070Sahakyan-m4--> </InlineEquation> can be complex numbers that satisfy the condition <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\mathop{\textrm{Re}{\left[{\alpha},{\beta}\right]}}&gt;-1\)</EquationSource> <!--LobJMat2561070Sahakyan-m5--> </InlineEquation>. Different types of integrals such as regular, singular, and hypersingular integrals, as well as integrals with a logarithmic kernel are considered. The uniformity of quadrature formulas makes it possible to use them to solve integral equations containing an arbitrary combination of these integrals.</p>

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Gauss-type Quadrature Formulas for Integrals of Various Types Containing the Jacobi Polynomial Weight Function with Complex Exponents

  • A. V. Sahakyan

摘要

Abstract

The paper presents quadrature formulas for calculating integrals defined on the interval \((-1,1)\) and containing the Jacobi weight function \({\left({1-x}\right)^{\alpha}}{\left({1+x}\right)^{\beta}}\) . The exponents \(\alpha\) and \(\beta\) can be complex numbers that satisfy the condition \(\mathop{\textrm{Re}{\left[{\alpha},{\beta}\right]}}>-1\) . Different types of integrals such as regular, singular, and hypersingular integrals, as well as integrals with a logarithmic kernel are considered. The uniformity of quadrature formulas makes it possible to use them to solve integral equations containing an arbitrary combination of these integrals.