A Nonlocal Finite-Difference Boundary-Value Problem
Tóm tắt
We investigate the stability of difference schemes for the equation of heat conduction with nonlocal boundary conditions. An example is given which in a certain sense imitates the problem with variable coefficients and has an exact solution in analytical form. It is shown that the difference operator has a simple spectrum and that multiple eigenvalues appear only in the case with constant coefficients. The simple spectrum ensures that the eigenvectors of the finite-difference problem form a basis. This enables us to apply to the nonlocal problem the theory of stability of symmetrizable difference schemes.
Tài liệu tham khảo
N. I. Ionkin, “Difference schemes for a non-classical problem,” Vestnik MGU, Ser. Vychisl. Matem. Kibern., No. 2, 20-32 (1977).
N. I. Ionkin, A Problem for the Equation of Heat Conduction with a Nonclassical (Nonlocal) Boundary Condition, Numerikus Modzerek, Budapest, No. 14, (1979).
N. I. Ionkin and E. A. Valikova, “On eigenvalues and eigenfunctions of a nonclassical boundary-value problem,” Mat. Modelirovanie, 8, No. 1, 53-63 (1996).
N. I. Ionkin and V. A. Morozova, Stability of Difference Schemes for the Equation of Heat Conduction with Nonlocal Boundary Conditions [in Russian], Preprint, Dialog-MGU, Moscow (2000).
A. V. Gulin and A. A. Samarskii, “Stability of a class of difference schemes,” Diff. Uravn., 29, No. 7, 1163-1173 (1993).
A. V. Gulin, “Toward a theory of stability of symmetrizable difference schemes,” Mat. Modelirovanie, 16, No. 6, 9-13 (1994).
A. V. Gulin and S. L. Degtyarev, “Stability of difference schemes with variable weights,” Vestnik MGU, Ser. 15, Vychisl. Matem. Kibern., No. 3, 23-29 (1994).
A. A. Samarskii and A. V. Gulin, Stability of Difference Schemes [in Russian], Nauka, Moscow (1973).
