Note on symmetric alteration of knots of B-spline curves.
Note on the first order orthogonal projections
Note sur le calcul approché par la méthode de Poncelet des radicaux de la forme
Note sur le calcul de la table d'activité
Nový pohled na algoritmickou matematiku
Numerical algorithms for perspective shape from shading
The Shape-From-Shading (SFS) problem is a fundamental and classic problem in computer vision. It amounts to compute the 3-D depth of objects in a single given 2-D image. This is done by exploiting information about the illumination and the image brightness. We deal with a recent model for Perspective SFS (PSFS) for Lambertian surfaces. It is defined by a Hamilton–Jacobi equation and complemented by state constraints boundary conditions. In this paper we investigate and compare three state-of-the-art...
Numerical Calculation of Incomplete Gamma Functions by the Trapezoidal Rule.
Numerical Differentation of Functions of Very Many Variables.
Numerical Differentiation Procedures for Non-Exact Data.
Numerical Evaluation of Integrals of Periodic Functions with Cauchy and Poisson Type Kernels.
Numerical Integration by Means of Adapted Euler Summation Formulas.
Numerical integration for high order pyramidal finite elements
We examine the effect of numerical integration on the accuracy of high order conforming pyramidal finite element methods. Non-smooth shape functions are indispensable to the construction of pyramidal elements, and this means the conventional treatment of numerical integration, which requires that the finite element approximation space is piecewise polynomial, cannot be applied. We develop an analysis that allows the finite element approximation space to include non-smooth functions and show that,...
Numerical integration for high order pyramidal finite elements
We examine the effect of numerical integration on the accuracy of high order conforming pyramidal finite element methods. Non-smooth shape functions are indispensable to the construction of pyramidal elements, and this means the conventional treatment of numerical integration, which requires that the finite element approximation space is piecewise polynomial, cannot be applied. We develop an analysis that allows the finite element approximation space to include non-smooth functions and show that,...
Numerical integration in the Trefftz finite element method
Using the high order Trefftz finite element method for solving partial differential equation requires numerical integration of oscillating functions. This integration could be performed, instead of classic techniques, also by the Levin method with some modifications. This paper shortly describes both the Trefftz method and the Levin method with its modification.
Numerical Integration over a Semi-Infinite Interval, Using the Lognormal Distribution.
Numerical integration with weights of convex functions of algebraic polynomials
Numerical Iteration of Functions of Very Many Variables.
Numerical methods of computation of singular and hypersingular integrals.
Numerical model of a pine in a wind
Steady-state nonlinear differential equations govering the stem curve of a wind-loaded pine are derived and solved numerically. Comparison is made between the results computed and the data from photographs of a pine stem during strong wind. The pine breaking is solved at the end.
Numerical Solution of Fractional Diffusion-Wave Equation with two Space Variables by Matrix Method
Mathematics Subject Classi¯cation 2010: 26A33, 65D25, 65M06, 65Z05.In the present paper we solve space-time fractional diffusion-wave equation with two space variables, using the matrix method. Here, in particular, we give solutions to classical diffusion and wave equations and fractional diffusion and wave equations with different combinations of time and space fractional derivatives. We also plot some graphs for these problems with the help of MATLAB routines.