Source: https://mayphus.org/mathematics/
Title: Racket Mathematics and 3D
Metadata: {"kind":"artifact","language":"en","route":"/mathematics/","type":"page"}

Racket Mathematics and 3D

The recovered 3D study uses Racket's plotting library to draw a damped radial wave together with a rising helix. The surface is defined by z = exp(-0.16 r²) cos(4r), where r = sqrt(x² + y²), across x and y from -2.8 to 2.8.

The archived 1,000 × 760 plot was inspected on 7 October 2026. It shows the blue-grey surface mesh and a red helix, matching the two components declared in the generator. A separate OBJ export contains 2,025 vertices and 3,872 triangular faces, matching the generator's 45 × 45 sampling grid. The OBJ contains the sampled surface; the helix is part of the plot.

The archive also contains a numerical tour and an HTML surface-viewer experiment. This recovery verified the saved 3D plot and mesh against the source; it did not rerun the generators or validate the browser viewer. The private source and saved artifacts remain outside the public page.