Has the Perfect Cuboid problem been solved?

A little over two years ago I learned of a neat unsolved problem in math. Does there exist a “perfect” cuboid – a brick-like shape with all sides and diagonals (including the long diagonal) having integer values.

The problem made for a fun Family Math project:

The problem also came up in a project inspired by a Patrick Honner post:

Mr Honner’s triangle and a surprising unsolved problem

Today Justin Lanier pointed out this post on Twitter:

I do not believe that papers on Arxiv.org have been reviewed, so for now the best I can do is hope that this paper stands up to scrutiny. It would be pretty neat to see this fun unsolved problem actually get solved.

One thought on “Has the Perfect Cuboid problem been solved?

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