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Chris Purcell

@ccppurcell.mathstodon.xyz.ap.brid.gy

Mathematician, computer scientist, bassist, knitter? [bridged from mathstodon.xyz/@ccppurcell on the fediverse by fed.brid.gy ]

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Chris Purcell @ccppurcell.mathstodon.xyz.ap.brid.gy · 26/01/2026

So the X pentomino fits into a rectangle which is smaller than its "bounding box". In this case we have a square of area 8, where the bounding box would be a 3x3 square. I suppose it's the smallest example, but is there an easy proof? I can imagine doing each […] [Original post on mathstodon.xyz]

The X pentomino at a 45 degree angle sitting inside a square. The convex corners of the pentomino touch the square, which has area 8 if the pentomino has area 5.

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Chris Purcell @ccppurcell.mathstodon.xyz.ap.brid.gy · 26/01/2026

So the X pentomino fits into a rectangle which is smaller than its "bounding box". In this case we have a square of area 8, where the bounding box would be a 3x3 square. I suppose it's the smallest example, but is there an easy proof? I can imagine doing each […] [Original post on mathstodon.xyz]

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