Maxima, a Computer Algebra System numexpr - Fast numerical array expression evaluator for Python and NumPy. Please be aware that the numexpr project has been migrated to GitHub. This site has been declared unmaintained as of 2014-01-21. Sorry for the inconveniences. -- Francesc Alted What It Is The numexpr package evaluates multiple-operator array expressions many times faster than NumPy can. Also,numexpr implements support for multi-threading computations straight into its internal virtual machine, written in C. It is also interesting to note that, as of version 2.0, numexpr uses the new iterator introduced in NumPy 1.6 so as to achieve better performance in a broader range of data arrangements. Finally, numexpr has support for the Intel VML (Vector Math Library) -- integrated in Intel MKL (Math Kernel Library) --, allowing nice speed-ups when computing transcendental functions (like trigonometrical, exponentials...) on top of Intel-compatible platforms. Examples of Use Using it is simple: >>> import numpy as np>>> import numexpr as ne >>> a = np.arange(1e6)>>> b = np.arange(1e6) and fast...
DocumentCloud Welcome to OpenModelica Sage - French TraceMedia - Terra Incognita Introduction Terra Incognita visualises how Wikipedia has evolved over the last decade, mapping the geographic articles for over 50 languages. The maps highlight cultural biases, unexpected areas of focus, the overlaps between languages, and regions that are unique to a language. There are two versions of the project, one based on Google Maps that is better for browsing Wikipedia articles at the level of countries and regions, the other based on Kartograph that shows how the articles are structured using a variety of world map projections. Before starting the application be aware that the larger Wikipedia languages are over 10MB to download, and the maps will perform better for selections of no more than 300 thousand articles. Wikipedia’s Evolution One aspect of Wikipedia the visualisation explores is how the various language editions have spread over the globe at different times, looking specifically at the record of newly created articles. Spanish, Portuguese, French & Italian in Europe
Detexify LaTeX Symbol Recognition Want a Mac app? Lucky you. The Mac app is finally stable enough. Restriction: In addition to the LaTeX command the unlicensed version will copy a reminder to purchase a license to the clipboard when you select a symbol. You can purchase a license here: Buy Detexify for Mac If you need help contact mail@danielkirs.ch. What is this? Anyone who works with LaTeX knows how time-consuming it can be to find a symbol in symbols-a4.pdf that you just can't memorize. How do I use it? Just draw the symbol you are looking for into the square area above and look what happens! My symbol isn't found! The symbol may not be trained enough or it is not yet in the list of supported symbols. I like this. You could spare some time training Detexify. The backend server is running on Digital Ocean (referral link) so you can also reduce my hosting costs by using that referral link. Why should I donate? Hosting of detexify costs some money. This doesn't work at all!? Be sure you use a modern browser. No. Yes.
SymPy