http://blogs.ams.org/phdplus/files/2017/05/Wali-and-Brandon.jpg http://blogs.ams.org/phdplus/files/2017/05/Wali-and-Brandon.... This poster presentation of non

http://blogs.ams.org/phdplus/files/2017/05/Wali-and-Brandon.jpg http://blogs.ams.org/phdplus/files/2017/05/Wali-and-Brandon.... This poster presentation of non-Euclidean geometry is really one of the best demonstrations that I've ever seen of these ideas. The precision and clarity of the hand drawn figures is lovely.