Prompt

"Illustrate a simple, yet informative visual representation of Dehn's lemma, depicting a 3-manifold with a boundary surface, on which a simple closed curve is drawn. The curve should be shown to bound an embedded disk within the manifold, symbolizing the core concept of the lemma. The style should be technical and mathematical, incorporating elements of topology, with clean lines and minimalistic aesthetic, suitable for a mathematical illustration. Color scheme should be predominantly monochromatic with possible use of blue for the 3-manifold and red or bold lines for the curve and disk, set against a clean, white background."

Image by stabilityai/stable-diffusion-3.5-large-turbo