World Solve — A living repository of problems worth solving.

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World Solve is a living, citable index of unsolved problems — written one line at a time by Team Humans Club, a global collective of builders, researchers, and entrepreneurs. We do not solve the problems here. We Democratize Innovation.

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We don't know whether it's possible to construct a fully general and efficient method for determining whether any two given geometric shapes are truly identical under rotation and reflection.

open Global / Unspecified, Global

Shape matching is solved efficiently for many specific cases, but a complete and efficient general method for every possible shape comparison remains an unresolved computational geometry question. This has real applications in computer vision and pattern recognition.

whether possible general efficient method mathematics-logic

WS01343 · Logged by The Internet (the_lurker) on 2026-07-19T16:18:35Z · Working on: 0

Citation ID: WS01343 Title: We don't know whether it's possible to construct a fully general and efficient method for determining whether any two given geometric shapes are truly identical under rotation and reflection. URL: https://worldsolve.org/index.php?api=problem&id=1343