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Nov
5
comment Fluorescence Correlation Spectroscopy Simulation
@Kane this is rather interesting. Is this molecular dynamics?
Nov
5
asked Calculating the mean curvature of a surface - suggestions
Nov
4
comment How can I set up a versioning system within a notebook?
@PeeterJoot Gotcha!
Nov
4
comment How can I set up a versioning system within a notebook?
@PeeterJoot Why not rsync. I hope this doesn't turn into a unix thing from a mathematica thing.
Nov
2
comment How do I plot x[t] vs. x'[t] (where x[t] and x'[t] are solutions to NDSolve)?
@rcollyer The book I used was: Elementary Stability and Bifurcation Theory
Nov
2
comment How do I plot x[t] vs. x'[t] (where x[t] and x'[t] are solutions to NDSolve)?
@rcollyer Thanks for the reference! I'll look into getting a copy. I had bifurcation theory as a grad level course but somehow nothing in that made sense to me (partly I suppose because of the terrible text book we had... cant remember the name now.)
Nov
1
comment How to do equality check of a large matrix and get the corresponding index position?
@sebastiancheung Have you considered using Position?
Nov
1
revised NDSolve Convergence test failure and significant effect of DifferenceOrder on eventual results
edited title
Nov
1
revised NDSolve Convergence test failure and significant effect of DifferenceOrder on eventual results
added 104 characters in body
Nov
1
asked NDSolve Convergence test failure and significant effect of DifferenceOrder on eventual results
Nov
1
awarded  Enthusiast
Oct
29
comment Plotting $\omega(k_x, k_z)$ in $(\omega, k)$ plane with assumption of $k^2 = k_x^2 + k_z^2$
@m0nhawk Is the dispersion function a growth rate of instabilities? I was curious as I have equations that look similar...
Oct
27
comment How to create symbol whose name has subscript?
I could create a symbol without assigning a value to it with Subscript[\[Theta], 1]. Beyond that I am unsure what you want to do with the symbol.
Oct
27
comment How to create symbol whose name has subscript?
Subscript[\[Theta], 1] = 20 works.
Oct
27
comment Numerically solving PDE with high precision
You should try using the Method->{"LSODA"} unless there is a reason you use a staggered grid through TensorProductGrid. I ran your simulation and with AbsoluteTiming I got 0.06 seconds of run time with LSODA and 8+ seconds with the MethodOfLines. :) Just thought that would be interesting for you!
Oct
26
comment Numerical solution of a differential equation with NIntegrate coefficients
@chris Thats alright! Theres more to life than forum points! :P
Oct
26
comment Numerical solution of a differential equation with NIntegrate coefficients
@chris Oh crap! After doing this again, I came up with the same thing as @JM. But thanks for the -1 ;-)
Oct
26
answered Numerical solution of a differential equation with NIntegrate coefficients
Oct
26
comment Numerical solution of a differential equation with NIntegrate coefficients
@episanty Why do you want to use tt to describe \[Tau]. Hit escape key , t and then escape again to get tau. I see this tt a lot with matlab and C users alike but this isn't needed in mathematica.
Oct
26
accepted Vector Analysis: Why are the Grad, Laplacian and Div being evaluated to zero