2 papers
math.CO2026
Generalized rank functions and quilts of alternating sign matrices
Sara Billey, Matjaž Konvalinka
In this paper, we present new objects, quilts of alternating sign matrices with respect to two given posets. Quilts generalize several commonly used concepts in mathematics. For ex…
math.CO2025
The Eulerian numbers can D.I.E
Matjaž Konvalinka, T. Kyle Petersen
The Eulerian numbers form a triangular array with many interesting properties. The numbers arise from various combinatorial and probabilistic interpretations, and have been studied…