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Polygons of unit area with vertices in sets of infinite planar measure

Paul Erdős and R. Daniel Mauldin asked a series of questions on certain types of polygons of area $1$, the vertices of which can be found in every planar set of infinite Lebesgue measure. We address two of these questions, one on cyclic quadrilaterals and the other on convex polygons with congruent sides, with respectively positive and negative answers.

preprint2025arXivOpen access
Vjekoslav KovačBruno Predojević
math.COmath.MGmath.CA
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Vjekoslav KovačBruno Predojević

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