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9h
revised How to plot a table of the results of findmaximum?
deleted 2 characters in body; edited tags
9h
comment Using Cases with a list argument
…or for infix fun: digrams[[1]] ~Append~ _.
9h
comment How can I avoid these defects in ContourPlot3D output?
As @blochwave notes, every time you hit something like this, one of the first things to try is to make sure all the numbers in the function you're plotting are exact. Rationalize[] is useful in that regard.
9h
revised NIntegrate Polynomial of high degree
edited tags
17h
comment Transform a vector DE into a set of scalar DEs
Thread[] ought to work.
17h
revised Only final result from NDSolve
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18h
revised How does Mathematica calculate its AdjacencyMatrix[ ] and VertexDegree[ ]
added 6 characters in body
18h
revised Dipolar magnetic field lines inside a cylinder
added 20 characters in body
18h
revised Dipolar magnetic field lines inside a cylinder
added 16 characters in body
18h
comment MatrixExp of a complex matrix of size about 10000 by 10000
If all you want is the trace, I'm pretty sure you don't need the entire matrix for it; the algorithms are not built-in, tho, and you may have to do some programming.
18h
comment Suggestions for solving a large linear system
Additionally, if your system is not already in matrix-vector format, you can use CoefficientArrays[] for the conversion.
18h
revised Dipolar magnetic field lines inside a cylinder
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18h
comment Dipolar magnetic field lines inside a cylinder
I don't know either. FWIW, I detest the drag-and-drop business myself.
19h
comment Dipolar magnetic field lines inside a cylinder
"that new picture upload interface don't allow me to upload a picture" - you can try uploading to imgur.com's site, link to it here, and then somebody can edit in the picture for you.
19h
comment Suggestions for solving a large linear system
Is the system sparse, by any chance?
20h
revised Styling the edges of a graph according to the multiplicities of the edges
appended answer 89808 as supplemental
21h
revised Simulating from CopulaDistribution
edited tags
21h
revised Compact Map of USA with Alaska and Hawaii shown under California
edited tags
21h
revised Understanding the use of GradientOrientationFilter to achieve a “brushed” effect
deleted 9 characters in body
21h
comment Mathematica not evaluating q derivative of Jacobi theta function
I don't believe Mathematica is able to symbolically deal with derivatives with respect to the nome; a numerical approach can be pursued here, however. Care will be needed when the nome is near the unit circle.