Torus Merch
Description: Dive into the captivating depth of this striking torus mandala design, spotlighting an intricate blue spirograph mesh balanced by a soft pink central core. Wrapped in bold concentric bands of rich indigo, earthy brown, and golden-yellow, this psychedelic sacred geometry print is perfect for adding a cosmic, eye-catching focal point to apparel, home decor, or custom accessories.
Vibrant Sacred Geometry Torus Spirograph Mandala Sticker
by This Could Have Been A Shirt
$3.15 $3.50
Description: Rendered on a deep dark background, this artwork presents a coffee mug and a donut side by side, joined by the symbol ≅, both of genus 1, showing that shape is what survives continuous deformation. With Analysis Situs (1895), Henri Poincaré laid the foundations of topology, the study of properties preserved under continuous deformation. To a topologist, a mug and a donut are the same shape: both have one hole. A gift idea for mathematicians, math teachers and engineers, and a quiet statement piece for a study, classroom or office wall.
Topology of a Mug and a Donut, Genus 1 Surfaces and Continuous Deformation Long Sleeve T-Shirt
by Science Design
$18 $24
