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We define and study the (/) -partial alternating sign matrix polytope, motivated by connections to the Chan-Robbins-Yuen polytope and the -Tamari lattice. We determine the inequality description and show this polytope is a face of the partial alternating sign matrix polytope of Heuer, Striker 2022. We show that the (/) -partial ASM polytope is an order polytope and a flow polytope.
Heuer et al. (Mon,) studied this question.