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- W3116784725 abstract "We study the computational complexity of computing solutions for the square-cut pizza sharing problem. In this problem, we have $n$ mass distributions in the plane, and the task is to find a path that uses horizontal and vertical segments that splits each of the masses in half while making at most $n-1$ turns. We show that finding an approximate solution to this problem is PPA-complete, while finding an exact solution is FIXP-hard and in BU. Our PPA-hardness result applies even when all mass distributions are unions of non-overlapping squares, and our FIXP-hardness result applies even when all mass distributions are unions of weighted squares and right-angled triangles. When the path is restricted to have at most $n-2$ turns, we show that the approximate problem becomes NP-complete, and the exact problem becomes ETR-complete." @default.
- W3116784725 created "2021-01-05" @default.
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- W3116784725 date "2020-12-28" @default.
- W3116784725 modified "2023-09-27" @default.
- W3116784725 title "Square-Cut Pizza Sharing is PPA-complete." @default.
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