The Sign of the
Double Cross
Double Cross
Scott Carnahan at Secret Blogging Seminar, December 14, 2007:
“… my advisor once told me, ‘If you ever find yourself drawing one of those meaningless diagrams with arrows connecting different areas of mathematics, it’s a good sign that you’re going senile.'”
Steven Cullinane at Log24, May 19, 2004:
Google search, May 17, 2009:
Related material: