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7 votes
1 answer
338 views

Computing powers of diagonal + rank-1 matrix?

Federico Poloni
  • 10k
4 votes
2 answers
213 views

Chebyshev/Lagrange polynomials in spectral methods

ConvexHull
  • 875
2 votes
1 answer
193 views

Motion of the particle trapped in potential

Anton Menshov♦
  • 8,542
4 votes
2 answers
215 views

Faster than forward substitution?

Wolfgang Bangerth
  • 52.4k
0 votes
1 answer
81 views

Time and memory required to diagonalize a 18000 by 18000 matrix using numpy in python

Brian Borchers
  • 18.1k
1 vote
2 answers
116 views

C^1 continuous element for a triangle?

helloworld922
  • 1,741
6 votes
1 answer
172 views

How to optimize an approximated matrix multiplication?

Zuba Tupaki
  • 63
3 votes
1 answer
102 views

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knl
  • 2,031
3 votes
2 answers
137 views

Non-conservative advective term in a finite volume scheme

ConvexHull
  • 875
0 votes
1 answer
200 views

What are the benefits of cutting by half the number of multiplications needed to calculate n?

user25406
  • 109
1 vote
1 answer
145 views

Storing Raw Simulation Data or Truncated Data?

Neil Lindquist
  • 565
0 votes
2 answers
111 views

Why is this scipy.root code not converging?

whpowell96
  • 1,242
0 votes
1 answer
55 views

How to design a sin and an arcsin function such that arcsin(sin(x))=x, where x is a finite precision floating point number

Federico Poloni
  • 10k
1 vote
1 answer
106 views

Do Explicit Methods Always Require an Analytical Solution

Anton Menshov♦
  • 8,542
3 votes
1 answer
82 views

Rank-1 correction of matrix exponential

Federico Poloni
  • 10k
4 votes
1 answer
86 views

Estimating forces on a model from the displacements of nodes

NNN
  • 654
0 votes
1 answer
79 views

Solving $\sum_i^d a_i \exp(-q_i k)=b_0$ for $k$

MPIchael
  • 2,391
1 vote
1 answer
78 views

Powers of convergent DPR1 matrices in $O(d)$ time?

Wolfgang Bangerth
  • 52.4k
1 vote
1 answer
76 views

Velocity Verlet leading to faster simulation than Euler in an n-Body simulation?

ght007
  • 95
0 votes
1 answer
98 views

Solve 1st order ODE in using `scipy`

Anton Menshov♦
  • 8,542
0 votes
1 answer
45 views

On solving a first order nonlinear differential equation

Monster
  • 103
0 votes
1 answer
72 views

FreeFEM++ converting equation into code

Masa
  • 194
0 votes
1 answer
82 views

Is FDTD A Method for Simulating Quantum Field Theory for Photons?

HEMMI
  • 136
2 votes
0 answers
105 views

Form of nonlinear diffusion equation

IPribec
  • 342
0 votes
1 answer
48 views

Finding best phase in least-squares manner

Federico Poloni
  • 10k
1 vote
2 answers
79 views

Solving 2D Poisson equation with nonhomogeneous boundary conditions (Dirichlet) and a source

Mephistopheles Faust
  • 1
4 votes
1 answer
79 views

Suggestions for libraries that can numerically compute geodesics from a given Riemannian metric?

Juan M. Bello-Rivas
  • 3,984
1 vote
0 answers
100 views

Which dense matrices are hard to invert?

Yaroslav Bulatov
  • 1,789
2 votes
1 answer
75 views

Need help to fully understand SciPy's odeint's reported step sizes, eval times, # of funct calls & total proc. time (re. question in Astronomy SE)

Lutz Lehmann
  • 4,829
2 votes
1 answer
72 views

Differential Equation with Forced Behavior

nicholaswogan
  • 297
3 votes
0 answers
89 views

A way to solve nonsmooth stiff ODEs

Daniel Shapero
  • 9,013
0 votes
0 answers
87 views

Pyton get fem solving simple 2D differential equation?

Makogan
  • 225
-2 votes
0 answers
85 views

Numerically solving for eigenvalues of Schrödinger equation in python [closed]

doetoe
  • 575
2 votes
0 answers
85 views

Schur complement formulation of linear system

Leonardo
  • 131
0 votes
1 answer
48 views

Finite difference approximation error

helloworld922
  • 1,741
2 votes
1 answer
78 views

Good IDE for GNU Octave?

shripal mehta
  • 103
3 votes
0 answers
77 views

Are there better methods than Levenberg-Marquardt for large-scale nonlinear least squares problems?

Amit Hochman
  • 1,081
1 vote
1 answer
53 views

Solving a boundary value problem with variable number of coupled equations

Wolfgang Bangerth
  • 52.4k
1 vote
0 answers
67 views

Strategies to solve an equation with a polynomial and a numeric function

WIP
  • 153
3 votes
0 answers
67 views

Is there any book about fundamental FEM theory using similar terminology as Comsol MultiPhysics?

HC6
  • 31
0 votes
1 answer
51 views

How do I use pdepe for a first order parabolic PDE with only one boundary condition?

Bill Greene
  • 5,844
1 vote
0 answers
65 views

Interface condition for 1D Helmholtz equation using finite element method

Ekrem Ekici
  • 11
2 votes
0 answers
63 views

Scipy.root not converging even when provided with initial guesses very close to solution

Klaus3
  • 123
3 votes
0 answers
62 views

Approximating eigenvalues of DPR1 matrix with special properties

Yaroslav Bulatov
  • 1,789
1 vote
0 answers
62 views

Convolution/weighted average of two arrays in Python

theWrongAlice
  • 105
0 votes
0 answers
58 views

Numerical integration library interfacing with eigen

KeynesCoeFen
  • 1
2 votes
0 answers
54 views

Symplectic (or alike) integrator for system with Coulomb singularity and time-dependent potentials

Daniel Shapero
  • 9,013
2 votes
0 answers
54 views

Poisson equation solution in a semiconductor structure

Photon
  • 33

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