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- W4384276752 abstract "Abstract The well-known backward difference formula (BDF) of the third, the fourth and the fifth orders are investigated for time integration of the phase field crystal model. By building up novel discrete gradient structures of the BDF-$textrm{k}$ ($textrm{k}=3,4,5$) formulas, we establish energy dissipation laws at the discrete levels and then obtain a priori solution estimates for the associated numerical schemes; however, we can not build any discrete energy dissipation law for the corresponding BDF-6 scheme because the BDF-6 formula itself does not have any discrete gradient structures. With the help of the discrete orthogonal convolution kernels and Young-type convolution inequalities, some concise $L^{2}$ norm error estimates (with respect to the starting data in the $L^{2}$ norm) are established via the discrete energy technique. To the best of our knowledge, this is the first time such type $L^{2}$ norm error estimates of non-A-stable BDF schemes are obtained for nonlinear parabolic equations. Numerical examples are presented to verify and support the theoretical analysis." @default.
- W4384276752 created "2023-07-15" @default.
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- W4384276752 date "2023-07-13" @default.
- W4384276752 modified "2023-10-16" @default.
- W4384276752 title "<i>L</i> 2 norm error estimates of BDF methods up to fifth-order for the phase field crystal model" @default.
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- W4384276752 doi "https://doi.org/10.1093/imanum/drad047" @default.
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