Reputation
57,045
Next tag badge:
139/100 score
18/20 answers
Badges
2 90 227
Newest
 bugs
Impact
~763k people reached

May
28
comment Defining quantum-mechanical Bra and Ket operations
@LLlAMnYP Yes, it's true - that notation is so useful and has been around forever, but is impossible to find in the documentation.
May
28
comment Eigenfunctions of the Laplacian on an arbitrary mesh
I guess what you need is NeumannValue
May
28
comment Eigenfunctions of the Laplacian on an arbitrary mesh
Have you seen this: Numerically solving Helmholtz equation in 2D for arbitrary shapes? Not saying it's a duplicate, just pointing out the close relation.
May
28
comment How to read off coefficients of tensor-like expression in a speedy way?
Indeed, I noticed similar timing differences with the original example by just repeating it many times.
May
28
comment How to read off coefficients of tensor-like expression in a speedy way?
@Mr.Wizard Yes, my initial timing included the duration of the keystrokes...
May
26
comment Asymptotic forms of Bessel function
Since this is one of the examples in the docs for Series under Scope, I would say this question can be closed.
May
26
comment Solve PDE with DiracDelta function
I don't think using the delta function is practical here. It's probably better to use the general solution in each domain (left and right half) and match them according to the compatibility conditions implied by the delta function. That should reduce the problem to a set of simultaneous (algebraic, not differential) equations for the integration constants in each interval once you know the general solution as derived in my answer to the linked question.
May
25
comment How can I customize the tooltips on a ContourPlot?
@episanty I added an answer to explain what I believe is going on.
May
25
comment Solve wave equation using DSolve?
(+1) Indeed, Laplace transforms also helped overcome the inability to solve an integro-differential equation here. For more complex boundary conditions it may be necessary to use superpositions of the general solution I obtained from separation of variables.
May
24
comment Animation of double pendulum
@shrx Sure, go ahead and add an answer - and thanks for the suggestion regarding frame rate.
May
23
comment Animation of double pendulum
@Mr.Wizard Thanks - and you're right about the tag, of course.
May
22
comment Exporting a 3D plot into a 3D viewing format and axis scaling
@episanty Good point - I think adding a transformation after the fact is certainly equally possible.
May
22
comment Exporting a 3D plot into a 3D viewing format and axis scaling
@episanty Wouldn't that also squish the axis labels?
May
17
comment Parse notation recursively
My understanding is that you're trying to do more than just format expressions for display. You're transforming expressions. That's not what Notation of MakeBoxes are really meant for, so I addressed your specific issues in a different way. You mention additional "subconditions," but I don't think they are part of the actual question you're asking, so I didn't address their implementation.
May
17
comment Incorporating photos into a Mathematica-made web page
Actually, I cannot reproduce this problem on OS X.
May
15
comment Orthogonality relations of Hermite polynomials
@chuy I see the same as you in version 8.
May
12
comment repeating a special type of square wave over time
Yes, that's a common issue: the quick variations are overlooked by Mathematica - so you simply have to tell it to be more careful by adding the Plot option PlotPoints -> 300 or some similarly large number.
May
11
comment Can I open Mathematica to plot something via some kind of Windows command?
Unfortunately I don't know how such things work in Windows. It would perhaps have to be the Windows equivalent of How to create an executable notebook in Mac OS X One problem with using Mathematica this way is that the number of simultaneous kernel sessions is limited by your license, whereas you can have as many gnuplot instances running as you like. This is something an external program that invokes Mathematica may have to account for. This assumes that "opening" Mathematica (as stated in the title of the question) is what you need.
May
11
comment How to create a cylinder with where the walls represent the output of a cellular automaton
What is the purpose? Do you want to export this in some specific format, or just visualize it? Without seeing what you have tried, this question isn't very clear and will probably be closed due to lack of information.
May
10
comment Can I open Mathematica to plot something via some kind of Windows command?
To clarify your question: do you require Mathematica to translate commands sent to it from Scala specifically, or is your question asking more generally how to script Mathematica to obtain a plot (not requiring gnuplot compatibility)?