Multivariable Calculus
The Helicoid
Plotting Surfaces
Saddle
Knotted Torus
Wow! then I just typed torus into Google Images, and my eyes glazed over.
Glass Torus made with Blobs I love it! I want it made of icecream so I can lick it.
Symplectic manifold
Riemann Surface of a Square Root
Vector Field
Complex Analysis
Plot of a Complex Number