Results 51 to 60 of about 33,775 (162)
A combinatorial identity for rooted labeled forests. [PDF]
Aequ Math, 2020 Hackl B.
europepmc +1 more source
, 2019 We give an elementary proof of an interesting combinatorial identity which is of particular interest in graph theory and its applications.
Dorlas, T. C. +2 more
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A formula relating Bell polynomials and Stirling numbers of the first kind
Enumerative Combinatorics and Applications, 2021 Mark Shattuck
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Meta-analysis of the Studies about the Association between Ethnic Identity and National Identity in Iran Focusing on the Role of Media [PDF]
مسائل اجتماعی ایران, 2018 Ethnic diversity in Iran on one hand, and attempts to create a coherent national identity since the first Pahlavi era on the other, raise the question of how ethnic and national identities are associated in Iran.
sSeyed Samad Beheshti +1 more
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A combinatorial proof of Newton's identities
Discrete Mathematics, 1984 A new proof of Newton's identities, with the help of an involution mapping has been obtained.
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Contextual and combinatorial structure in sperm whale vocalisations
Nature CommunicationsSperm whales (Physeter macrocephalus) are highly social mammals that communicate using sequences of clicks called codas. While a subset of codas have been shown to encode information about caller identity, almost everything else about the sperm whale ...
Pratyusha Sharma +6 more
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图的Aα-特征多项式系数的一个注记(A note on the coefficients of the Aα-characteristic polynomial of a graph)
Zhejiang Daxue xuebao. Lixue ban, 2019 Let G be a graph on n vertices, and let A( G ) and D ( G ) denote the adjacency matrix and the degree matrix of G, respectively. Define Aα ( G )= αD ( G )+( 1 - α ) A( G ) for any real α ∈ [ 0,1 ].
LIUShunyi,(柳顺义) +1 more
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Journal of Combinatorial Theory, Series A, 1977 Daniel E. Novoseller, M. L. Glasser
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Combinatorial Identities for the Narayana Numbers
AxiomsWe interpret the Narayana numbers combinatorially by having them count the number of tilings of an n-strip using squares and triominoes. Using this interpretation, we develop a collection of identities satisfied by the sequence of Narayana numbers. Additionally, these techniques are used to introduce the generalized Narayana numbers and the k-Narayana ...
Ángel Plaza, Steven J. Tedford
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Combinatorial Identities and Hypergeometric Functions, II [PDF]
Discrete Mathematics LettersHorst Alzer
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