Note that many other documents, in less finished form, are available elsewhere on this website.
Heronian tetrahedra are lattice tetrahedra.
American Mathematical Monthly 120:2 (2013), 140-149.
Received the 2014 MAA Paul Halmos–Lester Ford award.
Roots appear in quanta.
American Mathematical Monthly 111 (2004), 61-63.
Jacobians of genus one curves.
with , , , , .
Journal of Number Theory 90 (2001), 304–315.
Axis alignment in Xy-pic diagrams.
TUGboat 22 (2001), 330–334.
A complement to \smash, \llap, and \rlap.
TUGboat 22 (2001), 350–352.