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fred
  • Member for 6 years, 10 months
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9 votes
2 answers
2k views

What is the worst case complexity of Conjugate Gradient?

7 votes
1 answer
152 views

What are some ideas to preprocess / precondition the following linear system?

6 votes
1 answer
278 views

Do the class of PDEs that lack initial conditions have a name?

6 votes
0 answers
145 views

Do practice and theory differ substantially when implementing Neumann Boundary Conditions using a Mixed Method?

6 votes
0 answers
126 views

What strategies / decompositions would be useful to solve the following linear system repeatedly if I only care about time to solution?

5 votes
2 answers
157 views

Stokes Equation in "two-fold saddle point" form?

5 votes
1 answer
232 views

What is a good way to solve the following linear system? (repeatedly)

5 votes
1 answer
200 views

What factors are relevant when deciding between GMRES and schur complement solves?

5 votes
2 answers
132 views

Does this partial eigen-expansion have a name?

4 votes
2 answers
477 views

Why does the displacement have to be small to use the infintesimal strain elasticity equations?

3 votes
1 answer
107 views

In mixed elliptic formulation, what are the weakest requirements to ensure the flux is in $H^1$?

2 votes
0 answers
75 views

How can I numerically solve a saddle point problem with repeated constraints?

2 votes
0 answers
278 views

Does Conjugate Residual really have convergence properties similar to that of Conjugate Gradient?

2 votes
1 answer
75 views

Solving new linear system that comes from an $p$ enrichment

2 votes
0 answers
323 views

Sparse Linear Algebra vs Dense Linear Algebra

2 votes
1 answer
145 views

Bounded Input Boundaed Output stability for heat equation. Proof or Counter example?

1 vote
1 answer
159 views

How can I solve on a computer a large projection problem with redundant constraints?

1 vote
1 answer
318 views

Raviart Thomas Mixed Finite Element with Mixed boundary conditions reference request

1 vote
1 answer
101 views

Does a mixed method solve this elliptic pde exactly if the source function is piecewise polynomial?