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Feb
26
revised Confirming the existence of a function related to a matrix
rolled back to a previous revision
Feb
26
comment GPU user experiences
btw, is that C code?
Feb
26
comment GPU user experiences
Ok, block size 1 worked for me. And boy, that picture is pretty! Mine clocked at 0.0657 on NVIDIA GeForce GT 650M OpenGL Engine
Feb
26
revised Different highlight for each cluster in DendrogramPlot
edited tags
Feb
26
comment Stop Mathematica from giving imaginary solutions
In future, please post Mathematica input so that we (the folks trying to answer your question) can easily copy paste into a notebook.
Feb
26
revised Stop Mathematica from giving imaginary solutions
deleted 510 characters in body; edited tags; edited title
Feb
26
comment GPU user experiences
Btw, I get "OpenCLFunction::invblksz: OpenCLLink block size is invalid. " when I run the second code block starting with xRes=...
Feb
26
comment GPU user experiences
"Specifically, does at least the following return True" — For a lot of folks, it might not be as simple as that (esp. macs). I know for a fact that on both my MBPs (late 2008 and retina), CUDAQ[] repeatedly gave False even after installing the necessary packages from WRI. In the case of my old laptop, I had to manually install an update from NVIDIA, and in my retina MBP, I had to force the graphics card to always use the NVIDIA card and not the integrated one before I could get them to work (return True).
Feb
26
revised How to draw Graphics3D items with straight border lines?
deleted 1 characters in body; edited tags; edited title
Feb
26
comment Deep Pattern matching with repeating arguments
@RandomBits It won't... I thought that's what you were trying to do (which I realize wasn't what you were trying to do)
Feb
26
comment Confirming the existence of a function related to a matrix
Ok, no worries :) I would revert this to the original version (which was properly specified). If you were to start a new question, I would suggest doing so after studying my answer (and the documentation for the functions used) and then try to solve your general problem. If you then get stuck, you can ask a new one (who knows, maybe it can be extended very easily and you won't have to ask a question). Another suggestion would be to use Daniel's comment above and try FindInstance. People always like it when prior effort is shown (and my answer should guide you). Welcome to the site, btw! :)
Feb
26
comment Deep Pattern matching with repeating arguments
f_Or won't match Or[f] because it is already evaluated and becomes f
Feb
26
comment Confirming the existence of a function related to a matrix
So now it's no longer $i+2,j+2$, but all possible $i,j,k,l$? You should formulate your problem correctly before posting instead of changing it every 5 minutes... else it is a waste of everyone's time.
Feb
26
revised Confirming the existence of a function related to a matrix
added 7 characters in body
Feb
26
comment Confirming the existence of a function related to a matrix
@ssch It's a constant function
Feb
26
comment Confirming the existence of a function related to a matrix
Wait... you changed your question. I thought the $m_{ij}$ were entries in your matrix. Is that not the case? What relation does $M$ have with $f$?
Feb
26
answered Confirming the existence of a function related to a matrix
Feb
26
revised Confirming the existence of a function related to a matrix
edited tags
Feb
26
comment Why doesn't Compile work on Permutations function with second args?
Related: The two "Edit" sections here mathematica.stackexchange.com/a/1101/5
Feb
26
comment How can I draw this plot?
Hello there! I just wanted to point out that you can easily edit your previous answer by clicking the edit link and add this (and other updates) to it instead of serially posting answers :)