Found 43 Documents (Results 1–43)
Pointwise-in-time \(\alpha\)-robust error estimate of the ADI difference scheme for three-dimensional fractional subdiffusion equations with variable coefficients. (English) Zbl 07919825
Numerical solution of two-dimensional nonlinear unsteady advection-diffusion-reaction equations with variable coefficients. (English) Zbl 07866896
A new linearized second-order energy-stable finite element scheme for the nonlinear Benjamin-Bona-Mahony-Burgers equation. (English) Zbl 07859314
A positivity-preserving and robust fast solver for time-fractional convection-diffusion problems. (English) Zbl 1532.65064
A high-order combined finite element/interpolation approach for multidimensional nonlinear generalized Benjamin-Bona-Mahony-Burgers equation. (English) Zbl 1540.76098
A posteriori error estimate of MacCormack rapid solver method for two-dimensional incompressible Navier-Stokes problems. (English) Zbl 1522.76043
Stability and error estimation of \(\theta\)-difference finite element method with C-Bézier basis. (English) Zbl 07886640
A six-level time-split leap-frog/ Crank-Nicolson approach for two-dimensional nonlinear time-dependent convection diffusion reaction equation. (English) Zbl 07747963
A high-order numerical scheme for multidimensional convection-diffusion-reaction equation with time-fractional derivative. (English) Zbl 1529.65016
A new family of number sequences: Leonardo-Alwyn numbers. (English) Zbl 1539.11032
Reviewer: Jitender Singh (Amritsar)
MSC:
11B39
Efficient numerical simulations based on an explicit group approach for the time fractional advection-diffusion reaction equation. (English) Zbl 1524.35714
Complex dynamics of a discrete-time Bazykin-Berezovskaya prey-predator model with a strong Allee effect. (English) Zbl 1492.92067
A two-level fourth-order approach for time-fractional convection-diffusion-reaction equation with variable coefficients. (English) Zbl 1486.65121
Unconditional stability over long time intervals of a two-level coupled MacCormack/Crank-Nicolson method for evolutionary mixed Stokes-Darcy model. (English) Zbl 1492.76081
A fourth-order two-level factored implicit scheme for solving two-dimensional unsteady transport equation with time-dependent dispersion coefficients. (English) Zbl 07881089
A novel three-level time-split MacCormack scheme for two-dimensional evolutionary linear convection-diffusion-reaction equation with source term. (English) Zbl 1480.65219
A two-level factored Crank-Nicolson method for two-dimensional nonstationary advection-diffusion equation with time dependent dispersion coefficients and source terms. (English) Zbl 1488.65270
Multigrid methods for block-Toeplitz linear systems: convergence analysis and applications. (English) Zbl 07396240
Reviewer: Ivana Pultarová (Praha)
Numerical analysis of a second order algorithm for a non-stationary Navier-Stokes/Darcy model. (English) Zbl 1440.65236
Long time unconditional stability of a two-level hybrid method for nonstationary incompressible Navier-Stokes equations. (English) Zbl 1397.76095
Spectral analysis of coupled PDEs and of their Schur complements via generalized locally Toeplitz sequences in 2D. (English) Zbl 1439.65138
Procrustes problems and inverse eigenproblems for multilevel block \(\alpha\)-circulants. (English) Zbl 1413.15030
Distribution in the sense of eigenvalues of \(g\)-Toeplitz sequences: clustering and attraction. (English) Zbl 1330.65209
VanderLaan circulant type matrices. (English) Zbl 1470.15026
MSC:
15B05
Robust and optimal multi-iterative techniques for Iga Galerkin linear systems. (English) Zbl 1425.65136
Explicit form of the inverse matrices of tribonacci circulant type matrices. (English) Zbl 1383.15028
The invertibility, explicit determinants, and inverses of circulant and left circulant and \(g\)-circulant matrices involving any continuous Fibonacci and Lucas numbers. (English) Zbl 1474.15081
MSC:
15B36
Gaussian Fibonacci circulant type matrices. (English) Zbl 1474.15073
MSC:
15B05
Circulant type matrices with the sum and product of Fibonacci and Lucas numbers. (English) Zbl 1472.15007
Invertibility and explicit inverses of circulant-type matrices with \(k\)-Fibonacci and \(k\)-Lucas numbers. (English) Zbl 1473.15033
The explicit identities for spectral norms of circulant-type matrices involving binomial coefficients and harmonic numbers. (English) Zbl 1407.15027
The spectral norms of \(g\)-circulant matrices with classical Fibonacci and Lucas numbers entries. (English) Zbl 1334.15060
Singular-value (and eigenvalue) distribution and Krylov preconditioning of sequences of sampling matrices approximating integral operators. (English) Zbl 1340.31001
Reviewer: Neville Ford (Chester)
A note on the eigenvalues of \(g\)-circulants (and of \(g\)-Toeplitz, \(g\)-Hankel matrices). (English) Zbl 1312.15013
Reviewer: Tin Yau Tam (Auburn)
The identical estimates of spectral norms for circulant matrices with binomial coefficients combined with Fibonacci numbers and Lucas numbers entries. (English) Zbl 1287.15007
Generalized Pascal matrices generate classes closed under multiplication. (English) Zbl 1255.15037
Reviewer: Dimitris P. Vartziotis (Ioannina)
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