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math.CO2022
Dyck paths, binary words, and Grassmannian permutations avoiding an increasing pattern
Krishna Menon, Anurag Singh
A permutation is called Grassmannian if it has at most one descent. The study of pattern avoidance in such permutations was initiated by Gil and Tomasko in 2021. We continue this w…
math.CO2022★ 1 cited
Refinements of the braid arrangement and two parameter Fuss-Catalan numbers
Priyavrat Deshpande, Krishna Menon, Writika Sarkar
A hyperplane arrangement in is a finite collection of affine hyperplanes. Counting regions of hyperplane arrangements is an active research direction in enumerative…