Results 21 to 30 of about 7,617 (257)

Chromatic statistics for Catalan and Fuß-Catalan numbers

open access: yesElectronic Journal of Combinatorics, 2011
We refine Catalan numbers and Fuß-Catalan numbers by introducing colour statistics for triangulations of polygons and $d$-dimensional generalisations there-of which we call Fuß-Catalan complexes. Our refinements consist in showing that the number of triangulations, respectively Fuß-Catalan complexes, with a given colour distribution of its vertices is ...
Bacher, Roland, Krattenthaler, Christian
openaire   +3 more sources

Coinciding Mean of the Two Symmetries on the Set of Mean Functions

open access: yesAxioms, 2023
On the set M of mean functions, the symmetric mean of M with respect to mean M0 can be defined in several ways. The first one is related to the group structure on M, and the second one is defined trough Gauss’ functional equation.
Lenka Mihoković
doaj   +1 more source

The NADPH oxidase NOX4 regulates redox and metabolic homeostasis preventing HCC progression

open access: yesHepatology, EarlyView., 2022
Loss of NOX4 in HCC tumor cells induces metabolic reprogramming in a Nrf2/MYC‐dependent manner to promote HCC progression. Abstract Background and Aims The NADPH oxidase NOX4 plays a tumor‐suppressor function in HCC. Silencing NOX4 confers higher proliferative and migratory capacity to HCC cells and increases their in vivo tumorigenic potential in ...
Irene Peñuelas‐Haro   +14 more
wiley   +1 more source

q-Catalan numbers

open access: yesJournal of Combinatorial Theory, Series A, 1985
Let \(C_ n\) be the set of Catalan words: binary words with n zeros and n ones such that each initial segment has at least as many zeros and ones. For \(w\in C_ n\), let d(w) be the number of descents, a(w) be the sum over all descents of the number of zeros to the left, b(w) be the sum over all descents of the number of ones to the left.
J. Fürlinger, Josef Hofbauer
openaire   +1 more source

On a congruence involving $q$-Catalan numbers

open access: yesComptes Rendus. Mathématique, 2020
Based on a $q$-congruence of the author and Petrov, we set up a $q$-analogue of Sun–Tauraso’s congruence for sums of Catalan numbers, which extends a $q$-congruence due to Tauraso.
Liu, Ji-Cai
doaj   +1 more source

On a Surface Associated to the Catalan Triangle

open access: yesAxioms, 2022
We define a surface that interpolates the ballot numbers in the Catalan triangle corresponding to every pair of nonnegative integers (except for the origin).
Marilena Jianu   +5 more
doaj   +1 more source

A generalization of Catalan numbers

open access: yesDiscrete Mathematics, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Antonio Vera-López   +3 more
openaire   +2 more sources

Catalan pairs: A relational-theoretic approach to Catalan numbers

open access: yesAdvances in Applied Mathematics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Filippo Disanto   +3 more
openaire   +5 more sources

Some Families of Apéry-Like Fibonacci and Lucas Series

open access: yesMathematics, 2021
In this paper, the authors investigate two special families of series involving the reciprocal central binomial coefficients and Lucas numbers. Connections with several familiar sums representing the integer-valued Riemann zeta function are also pointed ...
Robert Frontczak   +2 more
doaj   +1 more source

Convolution identities involving the central binomial coefficients and Catalan numbers [PDF]

open access: yesTransactions on Combinatorics, 2021
We generalize some convolution identities due to Witula and Qi et al‎. ‎involving the central binomial coefficients and Catalan numbers‎. ‎Our formula allows us to establish many new identities involving these important quantities‎, ‎and recovers some ...
Necdet Batır, Hakan Kucuk, Sezer Sorgun
doaj   +1 more source

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