User Portlet User Portlet

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Version 10.2 introduced the function Annulus. This was a welcome addition and replaced the need for my clunky Annulus function, which only created a polygon; having a primitive is far superior. The new syntax was slightly different than mine but...
I'm not sure what is happening but it still works for me running 10.3.1 under OS X. What does happen sometimes is the input aliases somehow get locked into the User's init.m file; the aliases persist even when the package is not loaded. It...
The data for node positions is represented in terms of Associations, so this only works with version 10. In earlier versions I represented the node data differently, but this struck me as a natural and appropriate place to use this new data...
Export["mfile.csv", m] This can then be opened with Excel.
The default forms in Mathematica do not follow that convention. They are always capitalized and plural. It does correctly interpret the other forms but with an Alpha query. This is what I find awkward about the discovery approach; it looks ugly...
Can someone from WRI comment on the timing of the v10 update for the CDF Player? I have much CDF content and need to update it for the approaching Fall semester. If it will be more than a few weeks I will need to stay back on v9 for my Fall...
f[arg1,#]&/@xHere I used an anonymous function.  Note that Map[f,x] is the same as:f/@x
f1[L_List] := Flatten[Table[Rest[#], {First[#]}] & /@ L, 1] f2[L_List] := Sort /@ LI think this is all you're looking for.  There are probably slicker solutions.
That is equivalent by trig identities.  The constant c_1 is different, though.
It is somewhat missing the point to talk about how Dot fails as matrix multiplication.  The point of Dot is that it is a tensor operation and that it sometimes corresponds to matrix multiplication. In terms of tensor indices, Dot contracts the...