Keresés
37 találatból megjelenítve: 1-10
Cím: Generalized barred preferential arrangements
Szerző: ; ; ;
Dátum: 2023
Feltöltve: 2023-09-11
(2023)
We investigate a generalization of Fubini numbers. We present the combinatorial interpretation as barred preferential arrangements with some additional conditions on the blocks. We provide a proof for a generalization of ...
Cím: Poly-Cauchy numbers of the second kind - the combinatorics behind
Szerző: ;
Dátum: 2022
Feltöltve: 2023-09-11
(2022)
We introduce poly-Cauchy permutations of the second kind that are enumerated by the polyCauchy numbers of the second kind. We provide combinatorial proofs for several identities involving polyCauchy numbers of the second ...
Cím: Toppling on Permutations with an Extra Chip
Szerző: ;
Dátum: 2021
Feltöltve: 2023-02-16
(2021)
The study of toppling on permutations with an extra labeled chip was initiated by the first author with D. Hathcock and P. Tetali (arXiv:2010.11236), where the extra chip was added in the middle. We extend this to all ...
Cím: Generalized Ordered Set Partitions
Szerző: ; ;
Dátum: 2020
Feltöltve: 2023-02-16
(2020)
In this paper, we consider ordered set partitions obtained by imposing conditions on the size of the lists, and such that the first r elements are in distinct blocks, respectively. We introduce a generalization of the Lah ...
Cím: Mixed Coloured Permutations
Szerző: ;
Dátum: 2020
Feltöltve: 2023-02-16
(2020)
In this paper, we introduce mixed coloured permutations, permutations with certain coloured cycles, and study the enumerative properties of these combinatorial objects. We derive the generating function, closed forms, ...
Cím: Unfair distributions counted by the generalized Stirling numbers
Szerző: ; ;
Dátum: 2022
Feltöltve: 2023-02-17
(2022)
We investigate the generalized Stirling numbers S(n, k; α, β, γ) introduced by Hsu
and Shiue from a combinatorial point of view. We present a combinatorial interpretation in terms of certain restricted distributions of ...
Cím: On Higher Order Generalized Geometric Polynomials with Shifted Parameters
Szerző: ; ;
Dátum: 2022
Feltöltve: 2023-02-20
(2022)
We study a special class of higher order generalized geometric polynomials. Based on our combinatorial interpretation of labeled barred preferential arrangements, we prove several recursions. We also study the polynomials ...
Cím: Laboratory experiments on the influence of stratification and a bottom sill on seiche damping
Szerző: ; ;
Dátum: 2021
Feltöltve: 2023-02-16
(2021)
The damping of water surface standing waves (seiche modes) and the associated excitation of baroclinic internal waves are studied experimentally in a quasi-two-layer laboratory setting with a topographic obstacle at the ...
Cím: Fluid Flow Model Applied for Environmental Problems at a Combined Sewer Structure
Szerző: ; ;
Dátum: 2021
Feltöltve: 2023-02-20
(2021)
A junction structure of the greatest combined sewers of Budapest (Hungary) was under hydrodynamic and water quality examinations. The selected junction performs an important role in the operation of a combined sewer overflow. ...
Cím: Weak Ascent Sequences and Related Combinatorial Structures
Szerző: ; ;
Dátum: 2023
Feltöltve: 2023-02-14
(2023)
In this paper we introduce weak ascent sequences, a class of number sequences that properly contains ascent sequences. We show how these sequences uniquely encode each of the following objects: permutations avoiding a ...