The hypersphere
29:42
Why 4d geometry makes me sad
16:24
It really seems like our universe could be part of a hypersphere, but... it's probably not
22:56
Visualizing 4D Pt.1
23:16
The things you'll find in higher dimensions
26:19
Perfect Shapes in Higher Dimensions - Numberphile
31:51
Visualizing quaternions (4d numbers) with stereographic projection
13:07
I visualized 4D shapes #SoME2
31:48