Courant Institute New York University FAS CAS GSAS


hardware, software, unix, hacks

NYU alum and CIMS offspring produces iPhone app

Monday, April 20, 2009 - 1:28pm

Via Washington Square News, Tisch alumnus Tim Novikoff (son of Courant professor Albert Novikoff) has developed an SAT prep iPhone app called Flash of Genius. It's now the #1 seller in its class.

Blogged likes my dead blog

Thursday, March 5, 2009 - 9:18am

Got an email the other day from

Dear Dr. Matthew,

Our editors recently reviewed your blog and have given it a 7.5 score out of (10) in the recreation category of
This is quite an achievement!

We evaluated your blog based on the following criteria: Frequency of Updates, Relevance of Content, Site Design, and Writing Style.

GeoGebra to meet TeX

Monday, September 8, 2008 - 3:45pm

I've been a fan of GeoGebra since I saw a demonstration of it by Markus Hohenwarter as MSRI last year. It's a free (open-source), cross-platform (Java-based), dynamical geometry and algebra application.

The nice part about being java-based is you can export your GeoGebra worksheets to html with embedded java applets. And then with a bit of parameter munging you can upload them to your blog. The embedded applet can be as function as the application itself (a nice advantage to being free; it can't be stolen so there's no barrier to making it completely available).

The nice part about being open-source is that people can contribute to it as much as they want. Now in the works is a tool to export a GeoGebra worksheet to PGF/TikZ, so you can put them in your LaTeX documents.

LOC on the Web 3.0 bandwagon

Wednesday, August 13, 2008 - 3:15pm

I just discovered that the Library of Congress has established a persistent URL (or "permalink") for every item in their catalog. The data in the link is taken from the item's Library of Congress Control Number (LCCN) and is therefore called an LCCN permalink.

Subversion keywords and unicode

Monday, August 4, 2008 - 12:30pm

I'm editing some text files, and I like to use subversion to do this. It helps with managing my own different revisions of the files, and can mark them automatically with metadata.