Results 1 to 10 of about 426,250 (213)

Down-step statistics in generalized Dyck paths [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2022
The number of down-steps between pairs of up-steps in $k_t$-Dyck paths, a generalization of Dyck paths consisting of steps $\{(1, k), (1, -1)\}$ such that the path stays (weakly) above the line $y=-t$, is studied.
Andrei Asinowski   +2 more
doaj   +4 more sources

Pattern-avoiding Dyck paths [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
We introduce the notion of $\textit{pattern}$ in the context of lattice paths, and investigate it in the specific case of Dyck paths. Similarly to the case of permutations, the pattern-containment relation defines a poset structure on the set of all Dyck
Antonio Bernini   +3 more
doaj   +3 more sources

Skew Dyck paths with catastrophes [PDF]

open access: yesDiscrete Mathematics Letters, 2022
Skew Dyck paths are like Dyck paths, but an additional south-west step $(-1,-1)$ is allowed, provided that the path does not intersect itself. Lattice paths with catastrophes can drop from any level to the origin in just one step. We combine these two ideas. The analysis is strictly based on generating functions, and the kernel method is used.
Helmut Prodinger
doaj   +4 more sources

Brauer Configuration Algebras Arising from Dyck Paths

open access: yesMathematics, 2022
The enumeration of Dyck paths is one of the most remarkable problems in Catalan combinatorics. Recently introduced categories of Dyck paths have allowed interactions between the theory of representation of algebras and cluster algebras theory. As another
Agustín Moreno Cañadas   +2 more
doaj   +2 more sources

Generalized Dyck tilings (Extended Abstract) [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
Recently, Kenyon and Wilson introduced Dyck tilings, which are certain tilings of the region between two Dyck paths. The enumeration of Dyck tilings is related with hook formulas for forests and the combinatorics of Hermite polynomials. The first goal of
Matthieu Josuat-Vergès, Jang Soo Kim
doaj   +4 more sources

Rational Dyck Paths in the Non Relatively Prime Case [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
We study the relationship between rational slope Dyck paths and invariant subsets in Z, extending the work of the first two authors in the relatively prime case.
Eugene Gorsky   +2 more
doaj   +5 more sources

On rational Dyck paths and the enumeration of factor-free Dyck words [PDF]

open access: yesDiscrete Applied Mathematics, 2018
10 pages, 2 figures.
Michael D Weiner
exaly   +3 more sources

Permutations with Restricted Patterns and Dyck Paths

open access: yesAdvances in Applied Mathematics, 2001
We exhibit a bijection between 132-avoiding permutations and Dyck paths. Using this bijection, it is shown that all the recently discovered results on generating functions for 132-avoiding permutations with a given number of occurrences of the pattern $12...
C Krattenthaler
exaly   +4 more sources

The statistic “number of udu's” in Dyck paths

open access: yesDiscrete Mathematics, 2004
This paper studies the enumeration of Dyck paths by the number of \(udu\)'s (up-down-up). More precisely, the enumeration of Dyck paths with given semilength and given number of \(udu\)'s is obtained. An \(udu\) is said to be at low (high) level, if its peak is at level (greater than) one.
exaly   +3 more sources

Area of Brownian Motion with Generatingfunctionology [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
This paper gives a survey of the limit distributions of the areas of different types of random walks, namely Dyck paths, bilateral Dyck paths, meanders, and Bernoulli random walks, using the technology of generating functions only.
Michel Nguyên Thê
doaj   +1 more source

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