2023/07/02 by Ding, Ming-Jian, Zeng, Jiang · 2 citations
#05A05 #05A18 #05A19 #Combinatorics (math.CO) #FOS: Mathematics
paper · doi:10.48550/arxiv.2307.00570
The recent interest in q-Stirling numbers of the second kind in type B prompted us to give a type B analogue of a classical identity connecting the q-Stirling numbers of the second kind and Carlitz's major q-Eulerian numbers, which turns out to be a q-analogue of an identity due to Bagno, Biagioli and Garber. We provide a combinatorial proof of this identity and an analytical proof of a more general identity for colored permutations. In addition, we prove some q-identities about the q-Stirling numbers of the second kind in types A, B and D.