The Flat Klein Bottle Rendered in Curved-Crease Origami
Stepan Paul

TL;DR
This paper presents a novel curved-crease origami model of a flat Klein bottle that visually demonstrates its flatness and non-orientability, combining geometric fidelity with artistic representation.
Contribution
It introduces a new origami-based visualization method for the flat Klein bottle that preserves local flatness and topological features.
Findings
The model accurately represents the flat Klein bottle's geometry.
It visually demonstrates the non-orientability through coloring.
The approach preserves local flatness despite self-intersections.
Abstract
We introduce a simple and concrete way of visualizing in three dimensions a "flat" Klein bottle -- one whose local intrinsic geometry is the same as that of a flat plane -- which preserves most its topological and geometric structure. Concretely, the flatness property means that a small patch of the surface around any point can be flattened to a patch of the plane without stretching or compressing. Thus we can use the medium of curved-crease origami with inelastic film to make a model which, except for its self-intersections, necessarily has the flatness property, even along its folded edges. As such, the sculpture presented here illustrates both the flatness, and, through its coloring, the non-orientability of a Klein bottle.
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Taxonomy
TopicsAdvanced Materials and Mechanics · Architecture and Computational Design · Interactive and Immersive Displays
