Journal of applied mathematics & informatics
- Volume 19 Issue 1_2
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- Pages.33-55
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- 2005
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- 2734-1194(pISSN)
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- 2234-8417(eISSN)
STABILITY AND ERROR OF THE VARIABLE TWO-STEP BDF FOR SEMILINEAR PARABOLIC PROBLEMS
Abstract
The temporal discretisation of a moderate semilinear parabolic problem in an abstract setting by the two-step backward differentiation formula with variable step sizes is analysed. Stability as well as optimal smooth data error estimates are derived if the ratios of adjacent step sizes are bounded from above by 1.91.
Keywords
- Semilinear parabolic problem;
- time discretisation;
- backward differentiation formula;
- non-uniform grid;
- stability;
- error estimate