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Computational Science

Enlightened

 Enlightened
First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.
Awarded 373 times.
Why does iteratively solving the Hartree-Fock equations result in convergence?
Awarded Oct 29 at 23:47
mesh generation software before the 1990s
Awarded Aug 7 at 17:08
numerical solution of an under-determined linear equation in high dimensions
Awarded Jul 15 at 6:36
Catastrophic cancellation in difference quotient of tanh
Awarded Jul 9 at 22:19
Is it possible to proof a-b+b = a for all double floating-point numbers?
Awarded Jun 13 at 5:32
Is there any explicit symplectic Runge-Kutta method?
Awarded Mar 12 at 19:06
Accurate Polynomial Evaluation in Floating Point
Awarded Feb 18 at 15:09
Do all ODE solvers assume that the derivative is Riemann-integrable?
Awarded Feb 12 at 21:14
First appearance of the phrase "inverse crime"
Awarded Jan 30 at 13:33
Library for generating Discontinuous Galerkin FEM mesh
Awarded Jan 8 at 3:22
Time integration of first-order ODE with higher-order information
Awarded Dec 12, 2024 at 20:05
What are all these functions in FEM? Shape function vs Basis Function vs Trial Function vs Test Function vs Interpolation Function
Awarded Nov 14, 2024 at 4:27
Name this modification of Newton's method
Awarded Nov 6, 2024 at 10:09
3D laplacian operator
Awarded Nov 4, 2024 at 10:54
weighted SVD problem?
Awarded Oct 30, 2024 at 17:54
Numerical integration of ODEs: Why does higher accuracy and precision not lead to convergence?
Awarded Sep 22, 2024 at 20:52
Computing $\frac{x - y}{x - z}$ when $x,y,z$ are close to each other
Awarded Sep 18, 2024 at 19:27
Interpolating a mathematical function using a Hermite Cubic Finite Element Space
Awarded Jul 11, 2024 at 22:23
Are penalty functions still "necessary"?
Awarded May 27, 2024 at 14:57
Poor test functions for optimization
Awarded Mar 25, 2024 at 11:55
compute accurate derivatives using FFT
Awarded Feb 23, 2024 at 7:55
Convex Optimization problem with sum of absolute value constraints
Awarded Jan 19, 2024 at 21:09
Regarding automatic differentiation, is source-code-transformation (STC) more efficient than operator-overloading (OO)?
Awarded Dec 18, 2023 at 12:01
Why is it that SVD routines on nearly square matrices run significantly faster than if the matrix was highly non square?
Awarded Nov 10, 2023 at 8:55
What is the scaling or order of molecular dynamics (MD) simulations?
Awarded Nov 7, 2023 at 22:15
Computing numeric derivative via FFT - SciPy
Awarded Nov 5, 2023 at 6:56
More stable algorithm to calculate `sqrt(a^2 + b^2) - abs(a)` in MatLab
Awarded Nov 1, 2023 at 13:48
What is the state of the art algorithm for diagonalizing real symmetric matrices?
Awarded Oct 22, 2023 at 22:37
Is it possible to solve nonlinear PDEs without using Newton-Raphson iteration?
Awarded Oct 19, 2023 at 13:12
Linear interpolation in Fortran
Awarded Sep 29, 2023 at 23:55
What is the fastest way to compute all eigenvalues of a very big and sparse adjacency matrix in python?
Awarded Sep 23, 2023 at 0:33
Why are all eigen solvers iterative?
Awarded Sep 14, 2023 at 3:10
Poorly conditioned, easily evaluated sum for unit testing
Awarded Sep 1, 2023 at 15:51
How Jacobian matrix helps optimization faster?
Awarded Aug 23, 2023 at 6:15
Why is matrix inversion unstable when svd is stable?
Awarded Aug 12, 2023 at 8:51
How to prove the 2-norm of an invertible matrix is exactly the reciprocal of its minimum singular value?
Awarded Jul 31, 2023 at 21:26
Computer Build for Scientific Computing
Awarded Jul 26, 2023 at 13:52
How to determine if a point is outside or inside a curve
Awarded Jul 19, 2023 at 16:41
4th order tensor rotation - sources to refer
Awarded Jul 12, 2023 at 15:40
cholesky factorization of block matrices
Awarded Jun 4, 2023 at 1:11
How to choose a python parallelization library?
Awarded May 24, 2023 at 14:35
Why do I get an oscillatory solution when applying the implicit trapezoidal method to the linear diffusion equation?
Awarded May 15, 2023 at 4:13
Under what circumstances is parallel scaling of the finite element method not "solved"?
Awarded Apr 21, 2023 at 17:10
What happens when I use a conjugate gradient solver with a symmetric positive semi-definite matrix?
Awarded Mar 19, 2023 at 14:08
Generate random smooth 2D closed curves
Awarded Feb 20, 2023 at 9:16
Compute all eigenvalues of a very big and very sparse adjacency matrix
Awarded Feb 16, 2023 at 8:00
Looking for Runge-Kutta 8th order in C/C++
Awarded Feb 15, 2023 at 3:55
Why is velocity Verlet better than Verlet for gravity if it has a worse order of magnitude for the error term
Awarded Feb 13, 2023 at 18:25
What is the best method of computing $a^{(k)}/k!$?
Awarded Jan 14, 2023 at 22:16
How can I numerically integrate the Kepler problem?
Awarded Dec 2, 2022 at 20:32
Euler integration of the three-body problem
Awarded Nov 7, 2022 at 15:05
What are the usual steps and checks involved in upgrading a Scientific Computing code, if there is any?
Awarded Oct 25, 2022 at 19:32
Going back in time in an initial value problem
Awarded Sep 11, 2022 at 15:55
How do compression algorithms compress data so fast?
Awarded Aug 16, 2022 at 4:09
Are stiffness and instability equivalent?
Awarded Aug 14, 2022 at 14:47
Why does this preconditioner effectively reduce the condition number of a random SPD matrix?
Awarded Aug 4, 2022 at 7:19
Why aren't Krylov subspace methods popular in the Machine Learning community compared to Gradient Descent?
Awarded Jun 26, 2022 at 8:15
Numerical computation of Lyapunov exponent
Awarded Jun 13, 2022 at 21:42
Is there an algorithm or graph theory that allows me to not need to store an intermediate matrix when calculating AT*Y1*A + BT*Y2*B?
Awarded Jun 1, 2022 at 19:40
Arbitrary Precision Optimization Libraries?
Awarded May 25, 2022 at 18:55
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