Refined enumerations of alternating sign triangles

23 May 2019 Aigner Florian

This article introduces and investigates a refinement of alternating sign trapezoids by means of Catalan objects and Motzkin paths. Alternating sign trapezoids are a generalisation of alternating sign triangles, which were recently introduced by Ayyer, Behrend and Fischer... (read more)

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  • COMBINATORICS