About the Linear Algebra category
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0
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459
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January 28, 2019
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AMG for elasticity problems leaks with PETSc AMG smoothers
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2
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72
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March 26, 2024
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How to create a Matrix (dolfin.cpp.la.Matrix) from Vectors (dolfin.cpp.la.Vector)?
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4
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1910
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March 14, 2024
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Compute Null Space of Assembled PETSc Matrix?
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1
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323
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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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2799
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February 20, 2024
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Default parameters for NonLinearVariationalSolver
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5
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77
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February 14, 2024
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Matrix free petsc solver with multigrid (MG or GAMG) preconditioner
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0
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59
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February 9, 2024
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Instability when solving the linear system
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2
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61
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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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167
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January 11, 2024
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Matrix multiplication between ufl shape (2,2) and (2,)
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1
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105
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December 29, 2023
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Interpolation matrix with non matching meshes
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18
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791
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October 24, 2023
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Availability of diagonal scaling preconditioner in PETSc
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0
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122
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October 20, 2023
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Error with PETSc
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4
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219
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October 4, 2023
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Reapplying boundary conditions to the matrix
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4
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276
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October 3, 2023
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Solver Nolinear
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2
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213
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August 23, 2023
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Problem in solve linear system for a saddle point problem with preconditioners
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2
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204
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July 19, 2023
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Setting SNES solver with petsc4py segfaults
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8
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1215
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July 5, 2023
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Speeding up eigenvalue computation
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2
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796
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June 29, 2023
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Facing problem with solver()
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5
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306
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June 5, 2023
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Facing problem in solve()
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2
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269
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May 24, 2023
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Using inner product on non same dimmensional tensor
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2
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224
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May 10, 2023
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Grad(u) to numpy array
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9
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1723
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May 7, 2023
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Creating a custom PETScSNESSolver
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4
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815
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April 25, 2023
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Dot product without assembling vectors every time
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6
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460
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April 12, 2023
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How to set the tolerance of a solver
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1
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967
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April 8, 2023
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Slicing Tensors using subset of Free Indices or multiple free indices
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1
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288
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April 5, 2023
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Geometrical Multigrid in dolfinX
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0
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240
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March 13, 2023
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Reproducing Stable and unstable finite elements for the Maxwell eigenvalue problem in Fenicsx
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5
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601
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December 19, 2022
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How to condition my modified 3D elasticity FEniCS code?
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4
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735
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December 7, 2022
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Sparse Solver Choices
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1
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348
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November 14, 2022
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