Positivity preserving and unconditionally stable numerical scheme for the three-dimensional modified Fisher-Kolmogorov-Petrovsky-Piskunov equation

PDEs in connection with biology, chemistry and other natural sciences (35Q92) Population dynamics (general) (92D25) Maximum principles in context of PDEs (35B50) Finite difference methods for initial value and initial-boundary value problems involving PDEs (65M06) Stability and convergence of numerical methods for initial value and initial-boundary value problems involving PDEs (65M12) Numerical interpolation (65D05) Error bounds for initial value and initial-boundary value problems involving PDEs (65M15) Finite difference methods for boundary value problems involving PDEs (65N06) Computational methods for problems pertaining to biology (92-08) Traveling wave solutions (35C07) Positive solutions to PDEs (35B09)

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