I was playing around with a third party package ( homepage.cem.itesm.mx/lgomez/quantum ), and now somehow these functions Bra[],Ket[] etc are automatically defined when I relaunch Mathematica. Where could they be coming from and how can I find them?
It's also defined InputAliases and MakeBoxes for these commands... all already loaded
OK, I found some of the InputAliases in my init.m, but I don't know why the MakeBoxes is still working (i.e., "Bra[x]" -> "<x|")
Let's use this thread to post our favourite freely available third-party packages!
Instructions
Please post only those packages that you actually use yourself (not
any package you found) or packages that you created yourself.
Each answer should be one package, and should preferab...
This is an improvement to the original Wikicode project mixed with some ideas from Wikidata. The original Wikicode doesn't add much value as a random collection of code snippets because the search engines already do a good job of indexing snippets from blog posts, Stack Exchange, etc. Wikidata essentially associates a database table with each Wikipedia article, which greatly simplifies many synchronized updating scenarios across multiple articles and multiple language versions of the encylopedia. This project will associate a Mathematica module with each article. The inclusion criteria are ...
Bravo! Thanks I also have a question about priority queue in Mathematica
I know that with Needs["Parallel`Queue`Priority`"]; I can use priority queue. But the priority queue seems only support integer items. How can I extend it to support more complex data type?
I'd guess that one is used for dispatching tasks to the subkernels during parallel evaluations, so I don't think it is intended to be expanded. I'd just start from scratch with the simplest thing that does what you need and then improve the performance as needed in the future.
@novice check the Parallel` package source code. I'm pretty sure Roman Maeder intended for these queue types to be extensible, so you could probably add your own if you wanted. I've never tried it myself, though.
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@belisarius ah yeah I saw some mixed posts by you on the hat matter :P. I like the hats I guess, I am curious when I see I have a new hat. For me it doesn't need to go on for too long I suppose :)
@JacobAkkerboom Once my grandfather was hearing his sons discussing about the oddities of local politicians. He told them: -"They are quite nice. They provide us with some lively conversations"-
@belisarius I suppose you cannot always talk about math and programming :). It is sometimes hard to not be serious about that subject, you end up making awkward nerdy jokes :P
How can I factor an expression in terms of a set of other expressions? for example, given "variables" {a+b, a-b} then the expression "a" should have coefficients {1/2, 1/2}
using Solve just gives "{{y -> a/(a - b) - ((a + b) x)/(a - b)}}" where x is the other coefficient