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pro vyhledávání: '"Chen, Joanna"'
We derive functional equations for distributions of six classical statistics (ascents, descents, left-to-right maxima, right-to-left maxima, left-to-right minima, and right-to-left minima) on separable and irreducible separable permutations. The equa
Externí odkaz:
http://arxiv.org/abs/2404.18517
Autor:
Chen, Joanna N., Lin, Zhicong
A bijection between $(31245,32145,31254,32154)$-avoiding permutations and $(31425,32415,31524,32514)$-avoiding permutations is constructed, which preserves five classical set-valued statistics. Combining with two codings of permutations due respectiv
Externí odkaz:
http://arxiv.org/abs/2211.06871
Autor:
Chen, Joanna N., Fu, Shishuo
Laguerre histories (restricted or not) are certain weighted Motzkin paths with two types of level steps. They are, on one hand, in natural bijection with the set of permutations, and on the other hand, yield combinatorial interpretations for the mome
Externí odkaz:
http://arxiv.org/abs/2208.11627
Publikováno v:
In Applied Corpus Linguistics August 2024 4(2)
Publikováno v:
In The American Journal of Surgery January 2025 239
Autor:
Chen, Joanna N., Lin, Zhicong
The systematic study of inversion sequences avoiding triples of relations was initiated by Martinez and Savage. For a triple $(\rho_1,\rho_2,\rho_3)\in\{<,>,\leq,\geq,=,\neq,-\}^3$, they introduced $\I_n(\rho_1,\rho_2,\rho_3)$ as the set of inversion
Externí odkaz:
http://arxiv.org/abs/2112.04115
Autor:
Chen, Joanna N., Lin, Zhicong
Publikováno v:
In Journal of Combinatorial Theory, Series A February 2024 202
Autor:
Chen, Joanna N.
Permutation statistics $\wnm$ and $\rlm$ are both arising from permutation tableaux. $\wnm$ was introduced by Chen and Zhou, which was proved equally distributed with the number of unrestricted rows of a permutation tableau. While $\rlm$ is showed by
Externí odkaz:
http://arxiv.org/abs/2102.07299
Autor:
Chen, Joanna Na, Zhou, Robin Dapao
Permutations with bounded drop size, which we also call bounded permutations, was introduced by Chung, Claesson, Dukes and Graham. Petersen introduced a new Mahonian statistic the sorting index, which is denoted by $\sor$. Meanwhile, Wilson introduce
Externí odkaz:
http://arxiv.org/abs/2101.06026
Autor:
Chen, Joanna, Nazir, Anisa, Gerk, Ayla, Rabiee, Pedra, Faria, Isabella, Blake, Kaela, Vaghaiwalla, Tanaz
Publikováno v:
In The American Journal of Surgery October 2024