Solving nonlinear delay-differential-algebraic equations with singular perturbation via block boundary value methods
JOURNAL OF COMPUTATIONAL MATHEMATICS(2023)
Abstract
Block boundary value methods (BBVMs) are extended in this paper to obtain the numerical solutions of nonlinear delay-differential-algebraic equations with singular per-turbation (DDAESP). It is proved that the extended BBVMs in some suitable conditions are globally stable and can obtain a unique exact solution of the DDAESP. Besides, when-ever the classic Lipschitz conditions are satisfied, the extended BBVMs are preconsistent and pth order consistent. Moreover, through some numerical examples, the correctness of the theoretical results and computational validity of the extended BBVMs is further confirmed.
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Key words
Nonlinear delay-differential-algebraic equations with singular perturbation,Block boundary value methods,Unique solvability,Convergence,Global stability
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