OS X Screencast to animated GIF This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle. Instructions To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
These links no longer work. Springer have pulled the free plug. Graduate texts in mathematics duplicates = multiple editions A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen