2 papers
math.CO2024
A Complete Enumeration of Ballot Permutations Avoiding Sets of Small Patterns
Nathan Sun
Permutations whose prefixes contain at least as many ascents as descents are called ballot permutations. Lin, Wang, and Zhao have previously enumerated ballot permutations avoiding…
math.CO2024
On -permutations and Pattern Avoidance Classes
Nathan Sun
Multidimensional permutations, or -permutations, are represented by their diagrams on such that there exists exactly one point per hyperplane that satisfies $x_i=…