February 27, 2018Peder HalseideLeave a Comment on Reinventing the tarboosh: a fez for the 21st Century Reinventing the tarboosh: a fez for the 21st Century
February 27, 2018Peder HalseideLeave a Comment on There are 27 straight lines on a smooth cubic surface (always; for real!) There are 27 straight lines on a smooth cubic surface (always; for real!)