Möbius Band

The Möbius band is my favorite manifold. Probably because it's non-orientable, you never know which side is the inside and which side is the outside

I asked Aaron to make a desktop pic for me with a Möbius band, here is his pilot work 

Nice work! Thx, Aaron. I am looking forward to your final work :P

Aaron is a legendary digital artist in China, meet Aaron here

Calculator Infinity

I'd like to introduce you a very useful calculator as an iPad app.

Not only for the common calculation, but also for solving the problems in higher mathematics