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A finite element method for solving singular boundary-value problems

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Abstract

It is proved that under certain assumptions on the functions q(t) and f(t), there is one and only one function u0(t) ∈ \(\mathop {W_2^1 }\limits^o (a,b)\) at which the functional

$$\int\limits_a^b {[u'(t)]^2 dt} + \int\limits_a^b {q(t)u^2 (t)dt} - 2\int\limits_a^b {f(t)u(t)dt} $$

attains its minimum. An error bound for the finite element method for computing the function u0(t) in terms of q(t), f(t), and the meshsize h is presented. Bibliography: 3 titles.

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References

  1. M. N. Yakovlev, “Solvability of singular boundary-value problems for ordinary differential equations of order 2m,” Zap. Nauchn. Semin. POMI, 309, 174–188 (2004).

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  2. M. N. Yakovlev, “Existence of nonnegative solutions of singular boundary-value for second-order ordinary differential equations,” Zap. Nauchn. Semin. POMI, 323, 215–222 (2005).

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  3. M. N. Yakovlev, “The first boundary-value problem for a singular nonlinear ordinary differential equation of fourth order,” Zap. Nauchn. Semin. POMI, 334, 233–245 (2006).

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Translated from Zapiski Nauchnykh Seminarov POMI, Vol. 346, 2007, pp. 149–159.

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Yakovlev, M.N. A finite element method for solving singular boundary-value problems. J Math Sci 150, 1998–2004 (2008). https://doi.org/10.1007/s10958-008-0115-z

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  • DOI: https://doi.org/10.1007/s10958-008-0115-z

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