Judah Jacobson

Email: jjacobson@math.ucla.edu
Office: MS 3975

I am a graduate student in the UCLA Department of Mathematics. Currently, I am doing research on audio stream separation.

I am also interested in formalizing the "theory of patches" used by Darcs, a revision control system. My work so far on that subject is listed here.

TeX-related stuff

A TeX puzzle:

The following lines of TeX each define \foo to "do nothing."
Which of the following definitions, if any, give \foo the same meaning?
For the rest, give examples of usage to show how they differ.
  1. \def\foo{}
  2. \def\foo{\relax}
  3. \let\foo=\relax
  4. \edef\foo{\ifodd1\else\fi}