Elliptic curves: curves determined by the formula y²=x³+ax+b. Important for cryptography and for the solution of Fermat’s last theorem. For me a beautiful graph. See: https://en.wikipedia.org/wiki/Elliptic_curve.

Elliptic curves, -4≤a≤4 and -4≤b≤4. Black on white, through each other.

• 81 curves
• Size: 40×22 cm

Elliptic curves, -1≤a≤1 and -1≤b≤1. Different colours on white, through each other.

• 9 curves
• Size: 40×22 cm

Elliptic curves, -3≤a≤3 and -3≤b≤3. white on black, in a grid

• 49 curves
• Size: 19×19 cm