user14717
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1 answers
7 votes
618 views
3 bookmarks
Jacobi preconditioner not reducing condition number?
1 answers
6 votes
197 views
1 bookmarks
Whittaker-Shannon interpolation: Accuracy dies with speedup; can it be fixed?
2 answers
6 votes
267 views
2 bookmarks
Is Highams' computation of mean worth the price?
1 answers
6 votes
549 views
Defining a condition number and termination criteria for Newton's method
1 answers
6 votes
687 views
2 bookmarks
Clenshaw-type recurrence for derivative of Chebyshev series
1 answers
6 votes
407 views
2 bookmarks
Gaussian Numerical Differentiation
1 answers
5 votes
153 views
2 bookmarks
Accurate computation of Gauss-Kuzmin entropy
2 answers
5 votes
208 views
1 bookmarks
Building Gaussian-type quadrature schemes with Zernike polynomials
0 answers
5 votes
77 views
Automatic differentiation of barycentric rational functions
0 answers
5 votes
73 views
Padua-type pointset for functions singular on line $x=y$
0 answers
4 votes
81 views
2 bookmarks
Unstable Algorithms which become stable when hardware provides Kulisch exact dot product instruction
2 answers
4 votes
306 views
1 bookmarks
Analog of perfectly matched layers for finite element methods
4 answers
3 votes
147 views
Getting torsion and curvature out of ODE solution skeleton
0 answers
3 votes
141 views
Derivative of Whittaker-Shannon interpolant
0 answers
3 votes
52 views
Can Mallat's pyramidal algorithm be extended to non-power of 2 input sizes?
2 answers
3 votes
2k views
Stabilizing a 3x3 real symmetric matrix eigenvalue calculation
0 answers
3 votes
48 views
1D irregular interpolation with $O(1)$ or $O(\log(N))$ evaluation
0 answers
3 votes
85 views
Stabilizing online average calculation
1 answers
3 votes
115 views
Equal Area Sampling on Curved Surface:
2 answers
2 votes
152 views
Accelerating convergence of a generalized continued fraction
1 answers
2 votes
65 views
1 bookmarks
Best ways to avoid singularities in kernels when solving integral equations numerically
1 answers
2 votes
125 views
Confusion about Zabusky and Kruskal's stepper for the KdV equation
0 answers
2 votes
59 views
Can Taylor methods be used effectively on stiff ODEs?
1 answers
2 votes
163 views
1 bookmarks
Poorly conditioned, easily evaluated sum for unit testing
0 answers
1 votes
46 views
Solution fails to converge with different collocation point selection
2 answers
1 votes
75 views
Efficient ODE steppers with query of $f$ and $\nabla f$ is efficient
1 answers
1 votes
58 views
Monotonicity preserving interpolant in 1D
1 answers
1 votes
79 views
Missing something fundamental about condition number estimation
1 answers
1 votes
24 views
Domain transformation squashing interior quadrature nodes into boundary
0 answers
1 votes
48 views
Extracting Real Part of Twiddle Factors from `fftw_plan`