Computational Science

Enlightened

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First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.
Awarded 350 times.
$L^2$-convergence of finite element method when right hand side is only in $H^{-1}$ (Poisson eqn)
Awarded Jun 27, 2018 at 12:31
What is the fastest algorithm for computing the inverse matrix and its determinant for positive definite symmetric matrices?
Awarded Jun 23, 2018 at 0:33
Krylov subspace iterative methods in floating point arithmetic
Awarded Jun 14, 2018 at 16:49
numerical integration in many variables
Awarded Jun 13, 2018 at 23:17
Comparing Algorithmic complexity, ODE Solvers (Big O)
Awarded Jun 2, 2018 at 15:49
What does "symplectic" mean in reference to numerical integrators, and does SciPy's odeint use them?
Awarded May 31, 2018 at 21:24
How can I determine the period of my pseudo-random number generator?
Awarded May 24, 2018 at 20:07
Why does sparse linear algebra have a low arithmetic intensity?
Awarded May 22, 2018 at 12:31
What are the guidelines for conducting computational experiments?
Awarded May 6, 2018 at 22:51
Nonblocking version of MPI_Barrier in MPI 2
Awarded Apr 25, 2018 at 14:07
role of initial guess for iterative linear solver
Awarded Mar 26, 2018 at 5:49
Alternatives to Comsol Multiphysics
Awarded Mar 25, 2018 at 22:54
Do RBF kernel matrices tend to be ill-conditioned?
Awarded Mar 11, 2018 at 18:32
How to efficiently implement Dirichlet boundary conditions in global sparse finite element stiffnes matrices
Awarded Feb 18, 2018 at 23:10
Easily understandable argument that normal Runge–Kutta methods cannot be generalised to SDEs?
Awarded Feb 10, 2018 at 12:10
Is there a good, easy-to-use, high quality open source CFD solver out there?
Awarded Feb 1, 2018 at 9:05
Are there any numerical advantages in solving symmetric matrix compared to matrices without symmetry?
Awarded Jan 29, 2018 at 11:42
Mesh Independence Study: Is the Independent Mesh Really the Best One?
Awarded Dec 30, 2017 at 19:19
Evaluating $\log(\exp(x)+1)$ for negative $x$
Awarded Dec 17, 2017 at 1:13
When is Newton-Krylov not an appropriate solver?
Awarded Dec 1, 2017 at 18:00
Raviart-Thomas elements on reference square
Awarded Nov 16, 2017 at 20:40
Best practice for storing hierarchical simulation data
Awarded Nov 4, 2017 at 20:02
Is the exponential function, e^x, very expensive to compute in Matlab and harmful to my computer?
Awarded Nov 2, 2017 at 22:51
Computational methods for finding the energy eigenvalues of the time-independent Schrodinger equation with arbitrary potential
Awarded Oct 21, 2017 at 10:40
Quality of eigenvalue approximation in Lanczos method
Awarded Oct 15, 2017 at 0:38
Fast (approximate) evaluation of Chebyshev polynomial
Awarded Oct 12, 2017 at 17:42
Eigenvalues of Small Matrices
Awarded Oct 2, 2017 at 1:20
Is there any point to using hypot() for $\sqrt{1+c^2}$, $0 \le c \le 1$ for real numbers
Awarded Sep 5, 2017 at 3:29
Shrink wrapping algorithms to make a mesh watertight for 3d printing
Awarded Sep 1, 2017 at 7:03
Numerically stable way of computing angles between vectors
Awarded Aug 25, 2017 at 9:28
Performance of kd-tree vs brute-force nearest neighbor search on GPU?
Awarded Aug 8, 2017 at 4:24
Tutorial for flow around a cylinder in FEniCS
Awarded Jul 19, 2017 at 4:13
Why do the shape of finite elements matter?
Awarded Jul 7, 2017 at 23:49
BDF vs implicit Runge Kutta time stepping
Awarded Jun 17, 2017 at 18:14
Null-space of a rectangular dense matrix
Awarded Jun 13, 2017 at 5:38
How to approximate the condition number of a large matrix?
Awarded Jun 5, 2017 at 7:44
What are the differences between the different gradient-based numerical optimization methods?
Awarded May 27, 2017 at 22:32
How much regularization to add to make SVD stable?
Awarded May 3, 2017 at 11:25
How to formulate lumped mass matrix in FEM
Awarded Apr 19, 2017 at 12:47
Why do libraries need hand-vectorized code instead of compiler auto vectorization
Awarded Apr 18, 2017 at 10:14
Method to check for positive definite matrices
Awarded Apr 17, 2017 at 13:33
Importance of the Time Step Value for the Accuracy of a Transient CFD Simulation
Awarded Mar 31, 2017 at 7:24
Compute powers close to zero
Awarded Mar 30, 2017 at 23:50
Fitting one set of points to another by a rigid motion
Awarded Mar 17, 2017 at 21:52
Are there any heuristics for optimizing the successive over-relaxation (SOR) method?
Awarded Mar 15, 2017 at 18:46
How do I simulate an open end?
Awarded Mar 11, 2017 at 7:35
Astoundingly large difference when evaulating trigonometric identity with NumPy
Awarded Mar 11, 2017 at 4:11
What is a "hanging node" in the finite element meshing?
Awarded Feb 21, 2017 at 9:42
Scientific computing vs numerical analysis
Awarded Feb 12, 2017 at 19:41
Are BLAS implementations guaranteed to give the exact same result?
Awarded Feb 10, 2017 at 1:54
CUDA vs OpenCL as of late 2013
Awarded Jan 2, 2017 at 11:11
Constructing explicit Runge Kutta methods of order 9 and higher
Awarded Dec 4, 2016 at 23:09
Why are higher-order Runge–Kutta methods not used more often?
Awarded Nov 24, 2016 at 11:22
When should log1p and expm1 be used?
Awarded Nov 11, 2016 at 15:53
Which Runge-Kutta method is more accurate: Dormand-Prince or Cash-Karp?
Awarded Nov 4, 2016 at 16:25
Looking for name of optimization problem in form $\min \mathrm x^T \mathrm A \mathrm x$ subject to $\|\mathrm x\| = 1$
Awarded Nov 2, 2016 at 2:05
Krylov Subspace Methods for Dense Systems
Awarded Oct 18, 2016 at 19:12
Why is leapfrog integration symplectic and RK4 not, if the latter is more accurate?
Awarded Oct 17, 2016 at 19:48
Testing if a matrix is positive semi-definite
Awarded Sep 24, 2016 at 21:07
Finite elements $W^{1,\infty}$ error estimates
Awarded Sep 21, 2016 at 16:55
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