Snell meets Fagnano. Path optimization through an imperfect mirror

Fuente: arXiv
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Auteurs principaux: Arnold, Maxim, Park, Jaewoo
Format: Preprint
Publié: 2025
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author Arnold, Maxim
Park, Jaewoo
author_facet Arnold, Maxim
Park, Jaewoo
contents The renowned Fagnano problem asks for the inscribed triangle of minimal perimeter within a given reference triangle. Equivalently, it seeks a billiard trajectory inside the triangle that closes after three reflections. In this note, we consider a modification of this classical problem: finding the inscribed triangle of minimal weighted perimeter -- or, equivalently, the periodic trajectory of a Snell billiard.
format Preprint
id arxiv_https___arxiv_org_abs_2512_02236
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Snell meets Fagnano. Path optimization through an imperfect mirror
Arnold, Maxim
Park, Jaewoo
Dynamical Systems
The renowned Fagnano problem asks for the inscribed triangle of minimal perimeter within a given reference triangle. Equivalently, it seeks a billiard trajectory inside the triangle that closes after three reflections. In this note, we consider a modification of this classical problem: finding the inscribed triangle of minimal weighted perimeter -- or, equivalently, the periodic trajectory of a Snell billiard.
title Snell meets Fagnano. Path optimization through an imperfect mirror
topic Dynamical Systems
url https://arxiv.org/abs/2512.02236