I came across a really neat web demo of a mathematics equation hand-writing recognition tool called Web Equation. It can be used to recognize a hand-written mathematical expression (using your computer mouse or track-pad), and then convert it to the corresponding LaTeX or MathML code fragment. A few moments after the user has ‘drawn’ the formula, the code-fragment appears in a small box and can then be copy-and-pasted into your document editor.

When creating technical documents using the LaTeX document markup language, mathematical equations can get complicated enough to require frequent visits to the corresponding reference manuals. This tool is apparently written using JavaScript and simplifies the process of creating equations through an intuitive interface and a simple cut-and-paste operation.

It does pretty well with my track-pad written Discrete Fourier Transform:

## An even faster Fourier transform

Posted in Commentary, tagged FFT on January 23, 2012| Leave a Comment »

A group of MIT researchers have found a way to speed-up the fast Fourier transform for certain types of input data. The technique is described in an unpublished paper, which can be downloaded at this link.

From their abstract:

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