Distinct orders dividing each other on both sides

Ervin, Garrett

doi:10.1090/proc/14527

Distinct orders dividing each other on both sides
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Proc. Amer. Math. Soc. 147 (2019), 3729-3741 Request permission

Abstract:

We construct non-isomorphic linear orders $X$ and $Y$ that are both left-hand and right-hand divisors of one another, answering positively a question of Sierpiński.

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