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Mar
30
answered What is wrong in my calculation with clebsch-gordan coefficients?
Mar
30
comment How does Mathematica understand branchcuts of the complex logarithm?
@user6818 I added more information to my answer, although I had to guess what it is that you really want to know.
Mar
30
revised How does Mathematica understand branchcuts of the complex logarithm?
Added comments on the more mathematical issues of the question
Mar
29
comment How to speed up this TDSE code?
@LeonidShifrin It looks like you can get the same speed by replacing your SparseArray construct with the simpler Vmtx=DiagonalMatrix[SparseArray[(V[t]/@xls)]]
Mar
29
comment How to speed up this TDSE code?
@xslittlegrass To make it work on version <9, you could replace the definition of Ct0 by this: Ct0 = Table[Exp[-x^2], {x, -10, 10, 20/399}] // N; (the construct where Array fills slots in a range {a,b} given by the third argument doesn't exist in earlier versions).
Mar
29
awarded  Nice Answer
Mar
26
comment How does Mathematica understand branchcuts of the complex logarithm?
I may have time to get back to this later, but in the meantime you may want to look at this post: How to calculate contour integrals with Mathematica
Mar
26
comment How to create .ico file in Mathematica?
@Problemaniac It's not necessary, but I threw it in as a guess because I don't know for sure why the OP is having trouble. Maybe the answer boils down to: upgrade to version 9.0.1.
Mar
26
answered How to evaluate an integral involving normal distribution
Mar
26
revised How does Mathematica understand branchcuts of the complex logarithm?
Moved branch cuts
Mar
26
answered How does Mathematica understand branchcuts of the complex logarithm?
Mar
26
comment Asymptotic expansion
You can get that to work if you use a different expansion variable, e.g.: Series[Tanh[Log[z]], {z, Infinity, 2}] but not with the variable M, as explained in the link I posted. But that's basically a math question, and Mathematica is handling it correctly, I believe.
Mar
26
comment Asymptotic expansion
That case is again very different. You're asking for an asymptotic expansion of Tanh in its argument, which doesn't exist. I'm afraid there isn't anything more general I can say, there are too many possibilities. Maybe the best advice is to boil your expression down as far as you can by eliminating unnecessary variables that can be absorbed or scaled out.
Mar
26
comment How to create .ico file in Mathematica?
What version of Mathematica are you on, and what OS? I'm guessing version 8, right?
Mar
26
revised How to create .ico file in Mathematica?
added 103 characters in body
Mar
26
answered How to create .ico file in Mathematica?
Mar
25
comment FlipView can't handle CurrentValue[“MouseOver”]. Kernel crash
The EventHandler workaround from the linked answer doesn't really work here. I accidentally got it to "work" with the wrong syntax: FlipView[{EventHandler[Framed[...],Framed[...], {"MouseUp",2}:>Null]}] which strangely produced neither an error message nor a crash. But wrapping Framed individually doesn't prevent the crash.
Mar
25
comment Avoid crash in recursive Dynamic
Absolutely, for your application this isn't going to work.
Mar
25
comment Avoid crash in recursive Dynamic
@Kuba, yes, I think this was fixed in the meantime - I don't see the crash on 9.0.1 anymore. But in your question here, the fix seems to work.
Mar
25
comment FlipView can't handle CurrentValue[“MouseOver”]. Kernel crash
Perhaps related: Avoid crash in recursive Dynamic. The fix there does seem to work here if it wraps Framed.