3 papers
math.CO2026
Inversion-descent enumerators of -avoiding permutations
Qiongqiong Pan
We give the recurrence relation for counting polynomials for permutations avoiding the $\321$ vincular pattern, with respect to inversion numbers and descent numbers, and consequen…
math.CO2025
Web permutations, Seidel triangle and normalized -coefficients
Yao Dong, Zhicong Lin, Qiongqiong Pan
The web permutations were introduced by Hwang, Jang and Oh to interpret the entries of the transition matrix between the Specht and -web bases of the irreducible $§_…
math.CO2024
A -analog of the Stirling-Eulerian Polynomials
Yao Dong, Zhicong Lin, Qiongqiong Pan
In 1974, Carlitz and Scoville introduced the Stirling-Eulerian polynomial as the enumerator of permutations by descents, ascents, left-to-right maxima and right-to-l…