22 Jul
2011
22 Jul
'11
6:32 a.m.
Can a regular tessertact can be oriented in R^4 so that the orthogonal projection of its 1D edges onto a 2D plane have the shape of a 2 x 2 grid? +-----------+------------+ | | | | | | +-----------+------------+ | | | | | | +-----------+------------+