Geodesic
The Optimal Quadrature Formula of Approximate Calculation of Curvilinear Integral of First Kind for Some Classes of Functions and Curves
Modelirovanie i analiz informacionnyh sistem, Tome 20 (2013) no. 3, pp. 121-129

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In this paper is considered the extreme problem of searching for the optimal quadrature formulas in S. M. Nikolskiy sense for approximate calculation of curvilinear integrals of first kind on the class of differentiable functions, the second gradient norm of which in $L_P \ (1 \le p \infty)$ is bounded along the curve by which the curvilinear integral is calculated. The exact errors of optimal quadrature formula for the studied class of functions were calculated, and the explicit formulas for optimal nodes and coefficients was shown.
Mots-clés : quadrature formula, gradient, node.
Keywords: curvilinear integral, error 
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     author = {K. Tukhliev},
     title = {The {Optimal} {Quadrature} {Formula} of {Approximate} {Calculation} of {Curvilinear} {Integral} of {First} {Kind} for {Some} {Classes} of {Functions} and {Curves}},
     journal = {Modelirovanie i analiz informacionnyh sistem},
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K. Tukhliev. The Optimal Quadrature Formula of Approximate Calculation of Curvilinear Integral of First Kind for Some Classes of Functions and Curves. Modelirovanie i analiz informacionnyh sistem, Tome 20 (2013) no. 3, pp. 121-129. http://geodesic.mathdoc.fr/item/MAIS_2013_20_3_a8/