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Robert Nachbar
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This is really neat, Silvia. I hadn't seen the original post. I like the way there are two frequencies going in- and out-of-phase, giving a variable beat frequency, and the illusion of rotation.
Very nice! Please see if the new [CompartmentalModeling][1] paclet can make your teaching easier. I'd be more than happy to work with you to that end. Bob [1]:...
That is really strange behavior, and I consider it a bug. The easiest work around is to split the work into two parts using `Show`, putting everything except the lines in the first part, and only the lines in the second.: data =...
*WOLFRAM MATERIALS for the presentation:* > Robert Nachbar. > *Chemical Evolution with Combinators: A Quadranscentennial View*. > Wolfram Virtual Technology conference 2021. > https://www.wolfram.com/events/technology-conference/2021/ >...
If you take a look at the video that [@Ron Gove][at0] linked at the very beginning of this thread you can get a pretty good idea of the computability that can be achieved. I'm sure there is much that can be done. [at0]:...
Without loss of generality, we can work with 2-dimensional matrices. The Abelian group of order 3 has these elements: ``` In[429]:= A3 = {IdentityMatrix[2], RotationMatrix[2 \[Pi]/3], RotationMatrix[4 \[Pi]/3]} Out[429]= {{{1, 0}, {0,...
It's amazing where our thoughts come from. As from out of the blue while reading a book about a beech wood in England I realized that both myself and Danny overlooked that fact that the space groups are infinite groups. And because they are infinite,...
Clustering relies on a single measure of "distance" between objects, so it's just a matter of devising a reasonable way combining several distances (one for image data, one for physical measurements, one for pollinators, ...) into one. It is...
Because the package file is autogenerated from the notebook, every time the notebook is saved, the package file gets rewritten. Therefore one should _never_ edit the package file. Regarding conversion of a code file (script or package) into a...
The endemic equilibria can be found with `Solve`, the way you have been trying. I may just take a long time to get a fully symbolic solution. Unless you want to prove that an endemic equilibrium is unstable when R0