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About the Linear Algebra category
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0
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511
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January 28, 2019
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Inserting several vectors into assembled global matrix equation
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5
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74
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November 16, 2025
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Using Sherman Morrison formula for generating rank-1 boundary operator with Fenicsx and PETSc
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1
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32
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October 16, 2025
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Generate an inner product between RHS vector and solution vector in Dolfinx 0.9.0
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4
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45
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October 6, 2025
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Memory management with petsc4py
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2
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66
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September 10, 2025
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Obtaining nested Jacobian matrix from nonlinear residual and fieldsplit preconditioning
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12
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134
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August 14, 2025
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Interpolation matrix with non matching meshes
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24
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1787
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April 17, 2025
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Matrix free petsc solver with multigrid (MG or GAMG) preconditioner
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1
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291
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February 25, 2025
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Gmres residual explodes after 1 iter (transport problem, anisotropic mesh)
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1
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68
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January 14, 2025
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ufl_legacy.log.UFLException: determinant_expr not implemented for shape (4, 4)
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3
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26
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November 15, 2024
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Invert matrix only once for time-dep problems
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4
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43
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October 24, 2024
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How to create a Matrix (dolfin.cpp.la.Matrix) from Vectors (dolfin.cpp.la.Vector)?
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6
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2251
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September 24, 2024
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Elementwise multiplication in variational form / Hadamard product
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1
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44
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September 9, 2024
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Save and load the LU factorization results of a PETSc KSP direct solver
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2
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87
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August 29, 2024
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Linear solver change
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1
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46
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August 18, 2024
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Effective elasticity tensor
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2
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163
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July 8, 2024
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Using petsc4py.PETSc.SNES directly
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23
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4630
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June 13, 2024
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PETsc error code is : 63
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5
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130
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May 28, 2024
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Handling Time Terms in Implicit Difference Method
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0
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70
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May 20, 2024
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AttributeError: 'petsc4py.PETSc.KSP' object has no attribute 'matSolve'
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7
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196
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April 30, 2024
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Copy a numpy matrix into a fencis function
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1
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145
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April 24, 2024
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How to define uniform load on edge in 3D
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5
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1020
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April 20, 2024
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Creating a PETSc Matrix from given Matrix, solve eigenvalue problem (petsc4py?)
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4
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3121
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April 16, 2024
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AMG for elasticity problems leaks with PETSc AMG smoothers
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3
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390
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April 12, 2024
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SLEPc gives indefinite matrix error
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0
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228
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April 5, 2024
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Compute Null Space of Assembled PETSc Matrix?
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1
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526
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February 21, 2024
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Implementing the Newton Method per hand
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5
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3284
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February 20, 2024
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Default parameters for NonLinearVariationalSolver
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5
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630
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February 14, 2024
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Instability when solving the linear system
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2
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151
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January 24, 2024
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How to use multi-grid "Trilinos/ml" preconditioner when FEniCSx is installed with conda-forge?
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6
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363
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January 11, 2024
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