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Nico Schlömer's user avatar
Nico Schlömer's user avatar
Nico Schlömer's user avatar
Nico Schlömer
  • Member for 11 years, 2 months
  • Last seen more than a month ago
2 votes
1 answer
177 views

LOBPCG bad preconditioned performance for largest eigenpairs

2 votes
0 answers
64 views

LSMR: update $\|x\|$ cheaply

3 votes
1 answer
219 views

Preconditioning a least-squares problem?

4 votes
1 answer
162 views

Geometric integrators besides midpoint/Crank-Nicolson?

1 vote
3 answers
207 views

preconditioner for Laplace "without" boundary values

1 vote
1 answer
152 views

CG without division by 0 in a solution

7 votes
0 answers
453 views

fastest way to compute many small dot products

5 votes
1 answer
100 views

approximate function such that the inverse of the approximation is "simple"

5 votes
1 answer
131 views

Approximate $\|\Delta f\|^2_{L^2(\Omega)}$ in finite element context

2 votes
1 answer
184 views

FEM-Laplace with Dirichlet in only a few points: Nonsingular operator?

6 votes
2 answers
651 views

Residual norm of PDE discretization: correspondence in the continuous problem?

4 votes
2 answers
224 views

treating "almost linear" nonlinear least-squares problems

5 votes
1 answer
294 views

Nonlinear least-squares solvers vs. generic minimization

10 votes
3 answers
538 views

Integrating Lagrange polynomials with many nodes, round-off

2 votes
2 answers
683 views

computing Newton-Cotes weights

8 votes
1 answer
162 views

F(x) = 0 vs. ||F(x)||^2->min

3 votes
1 answer
229 views

boundary oscillations with Robin boundary conditions

5 votes
0 answers
197 views

Time-stepping for coupled nonlinear PDEs

3 votes
1 answer
111 views

number of tetrahedra in unstructured mesh when edge length is halved

16 votes
7 answers
1k views

Scripted Mesh Generation Software

5 votes
2 answers
1k views

FEniCS: custom quadrature rule

13 votes
2 answers
446 views

Oscillations in singularly perturbed reaction-diffusion problems with finite elements

4 votes
1 answer
157 views

compute max(||u||) for vector field

2 votes
2 answers
619 views

FEniCS: check if function is globally greater than 0

7 votes
2 answers
4k views

FEniCS: separate boundary conditions in normal and tangential direction of mesh boundary

3 votes
2 answers
1k views

FEniCS: extracting points from a cell