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bzm3r
  • Member for 10 years
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8 votes
1 answer
540 views

Good tutorials on how to use Butcher tables?

7 votes
1 answer
364 views

How to avoid overflow error in program that computes product of two numbers, such that when one is big enough to cause overflow, other is $0$?

6 votes
1 answer
488 views

Error implementing Robin boundary conditions in toy ODE problem

6 votes
2 answers
616 views

How does the L-stability or A-stability of a scheme relate to its ability to preserve a quadratic invariant?

5 votes
1 answer
133 views

What is lost in terms of approximation, when writing a problem in terms of a Differential Algebraic Equation (DAE) system rather than an ODE system?

5 votes
1 answer
261 views

Complete (an incomplete) explanation of the phenomenon of "aliasing", when using Fourier series to approximate functions?

5 votes
1 answer
105 views

Reference request: theory regarding time evolution of closed loop 2D elastic shapes?

5 votes
1 answer
65 views

How would I figure out when a function would be at the "brink of underflow"?

4 votes
1 answer
191 views

What is a dense ODE system? What is a sparse ODE system?

4 votes
1 answer
644 views

Function approximation: why does using increasingly higher order approximating polynomials not lead to convergent approximation schemes in general?

4 votes
1 answer
2k views

Solving large, non-linear systems of ODEs numerically: what do I need to consider in order to figure out which solver to use?

4 votes
2 answers
1k views

scipy odeint: sum of conservative ode equations does not remain zero as it is being solved -- is this normal?

3 votes
1 answer
650 views

General heuristics for making a choice "dopri5", and "lsoda"?

3 votes
1 answer
88 views

Resource recommendations for numerical methods involved in dynamical systems analysis

3 votes
1 answer
933 views

How can I avoid roundoff error when calculating the difference $\textrm{erfc}(a) - \textrm{erfc}(b)$?

2 votes
2 answers
237 views

Which processor should I consider buying for a desktop built for scientific computing?

2 votes
1 answer
343 views

Speedier alternative to “skimage.morphology._pnpoly import points_inside_poly”?

2 votes
2 answers
2k views

How best to use scipy.integrate's ODE solvers when state is not naturally stored as a vector?

2 votes
0 answers
72 views

2nd order differences for modelling a physically discrete phenomenon?

1 vote
2 answers
4k views

scipy.integrate.odeint: how can odeint access a parameter set that is evolving independently of it?

1 vote
1 answer
125 views

Possible to reduce effort needed to solve non-linear ODEs by taking some coefficients/parameters as constant over small time intervals?

1 vote
1 answer
50 views

Resources exploring the problem of "volume exclusion"?

1 vote
0 answers
196 views

Is it worth switching to timesteppers provided by PETSc if I can't write down a Jacobian for my problem? Case study with "the amoeba" toy problem

1 vote
1 answer
104 views

How is the final result calculated in RK-Dopri(4,5)?

0 votes
1 answer
179 views

`lsoda` from `odepack`: does relative tolerance override absolute tolerance, or the other way around?

0 votes
1 answer
3k views

`scipy`: what does `scipy.integrate.odeint`'s Repeated convergence failures (perhaps bad Jacobian or tolerances)." error mean?

0 votes
1 answer
98 views

Mathematical error when attempting to represent step function using fourier series

0 votes
1 answer
54 views

Why might the time taken to compute the solution of an ODE system over some interval increase non-linearly with increasing size of interval?