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Lutz Lehmann
  • Member for 8 years, 8 months
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13 votes
Accepted

Why is the central difference method dispersing my solution?

11 votes

Why are log and exp considered 'expensive' computations in ML?

10 votes
Accepted

Numerical computation of Lyapunov exponent

9 votes
Accepted

Solving Schrodinger Equation with finite element and Crank-Nicolson?

8 votes
Accepted

Polynomial approximation for floating-point arithmetic

6 votes
Accepted

Support Vector Machines as Neural Nets?

5 votes

Evaluating large determinants with multivariate polynomial entries

5 votes

What's a nice simple PDE to play with in Matlab?

5 votes
Accepted

scipy odeint: excess work done on this call and very sensitive to initial value

5 votes
Accepted

Trying to model a simple second order ODE

5 votes
Accepted

Error in Simpson's 3/8 rule is higher than that of Simpson's 1/3 rule

5 votes

Why do problems arise in FFT for smaller value of df in Python?

4 votes

How can I color my Mandelbrot set like this?

4 votes
Accepted

Boundary value problem with singularity and boundary condition at infinity

4 votes
Accepted

Integral of the Poisson Kernel

4 votes
Accepted

Easy way to perform solver over pandas dataframe

4 votes
Accepted

2nd order differential equation coupled to integro-differential equation in python

4 votes
Accepted

Simplification of complex amplitudes

4 votes
Accepted

Parameter estimation simple theory question related to scipy.optimize.curve_fit

4 votes

Using velocity verlet algorithm for nbody simulation results in planet leaving orbit

4 votes
Accepted

Floating point and global error in Euler Method

4 votes

4th-order Runge-Kutta method for coupled harmonic oscillator

4 votes

Largest negative eigenvalue

4 votes

What are projection methods

4 votes

A clean way to compute exp(-1/x^2) near x=0 in C?

4 votes
Accepted

Wrong results for $2$ stage multistep method $y_{n+2} - y_n = h\left[(1/3)f_{n+2} + (4/3)f_{n+1} + (1/3)f_n\right]$

4 votes

Test of 3rd-order vs 4th-order symplectic integrator with strange result

3 votes
Accepted

Online Parameter Estimation using steepest descent

3 votes
Accepted

Confusion about Zabusky and Kruskal's stepper for the KdV equation

3 votes
Accepted

RK4 giving wrong result