Other graphics

Weierstrass-Riemann function

The everywhere continuous, but nowhere differentiable Weierstrass–Riemann functions (red), (green), and (blue). Here .

Weyl sums

Weyl sums of the form for various .

Various parametrized surfaces

Sphere parametrized through .

Torus parametrized through .

Klein bottle parametrized through .

Steiner's Roman surface parametrized through .

Cross cap parametrized through .

Fractional derivatives

Real part (left graphic) and imaginary part (right graphic) of the fractional derivatives of .

Real part of the fractional derivatives of over the .