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math.CO2026
Enumerating separable derangements
Robert Dougherty-Bliss, Alejandro B. Galván, Michaela A. Polley +1
We give a polynomial-time algorithm to compute the number of separable derangements of . This algorithm is based on a generating function technique which tracks permutat…
math.CO2023
Triangular partitions: enumeration, structure, and generation
Sergi Elizalde, Alejandro B. Galván
A triangular partition is a partition whose Ferrers diagram can be separated from its complement (as a subset of ) by a straight line. Having their origins in combina…