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math.CO2022
Lattice path enumeration for semi-magic squares by Latin rectangles
Robert W. Donley, Won Geun Kim
Similar to how standard Young tableaux represent paths in the Young lattice, Latin rectangles may be use to enumerate paths in the poset of semi-magic squares with entries zero or…
math.CO2019★ 1 cited
Binomial arrays and generalized Vandermonde identities
Robert W. Donley
In previous work on Clebsch-Gordan coefficients, certain remarkable hexagonal arrays of integers are constructed that display behaviors found in Pascal's Triangle. We explain these…