Hilbert Curve Unisex T-Shirt — Seoul

One unbroken line that reaches every corner of the square.

In 1891 David Hilbert showed that a single continuous line can come arbitrarily close to every point of a square if you follow a simple, recursive process: Draw a U through four squares. Replace each turn with a smaller U, rotated to join its neighbors, and repeat.

This print shows a curve built on these rules at several levels of recursion.

Computers use space-filling curves like this one to store maps, images and databases because this process keeps neighboring things side by side.

Who it’s for

Space-filling curves sit inside the software that runs maps and databases, keeping nearby places together in memory so searches stay fast. Made for data engineers, GIS analysts, software developers and computer scientists.

Made to be noticed: a bold print in a relaxed unisex cut, for conferences, concerts, weekends, and anywhere a good conversation might start.

The Unisex T-Shirt

• Lightweight polyester with a soft, cotton-like hand. Quick-drying, relaxed unisex fit: size down for a closer fit.
• Wash by hand or on a gentle cycle. Hang to dry, no bleach, cool iron.
• Not quite the right fit? Tell us within 30 days and we’ll make it right.

Size guide

Measurements around the body, in cm (inches). Allow 1–3 cm either way.

Every Zenzicube design is grown from a real piece of mathematics. Find more in the Mathematical Menagerie.