Results 51 to 60 of about 273,507 (170)

The compared costs of domination, location-domination and identification

Discussiones Mathematicae Graph Theory, 2020
Let \(G\) be a graph and \(\{u\in V(G):d_G(u,v)\leq r\}\) is a ball of radius \(r\in\mathbb{N}\) centered at \(v\in V(G)\) and denoted by \(B_r(v)\). We say that \(x,y\in V(G)\) are \(r\)-twins if \(B_r(x)=B_r(y)\). A set \(D_1\subseteq V(G)\) is an \(r\)-dominating code of \(G\) if \(D_1\cap B_r(v)\neq\emptyset\) for every \(v\in V(G)\).
Hudry Olivier, Lobstein Antoine
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Domination and upper domination of direct product graphs [PDF]

Discrete Mathematics, 2018
16 pages, 1 ...
Colin Defant, Sumun Iyer
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Loss of ecologically important genetic variation in late generation hybrids reveals links between adaptation and speciation

Evolution Letters, 2020
Adaptation to contrasting environments occurs when advantageous alleles accumulate in each population, but it remains largely unknown whether these same advantageous alleles create genetic incompatibilities that can cause intrinsic reproductive isolation
Greg M. Walter, Thomas J. Richards, Melanie J Wilkinson, Mark W. Blows, J. David Aguirre, Daniel Ortiz‐Barrientos   +5 more
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Distance domination versus iterated domination

Discrete Mathematics, 2012
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Gábor Bacsó, Zsolt Tuza
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In situ imagery unravels resources exploitation strategies among ant communities in a tropical agrosystem

Ecosphere
Ants are one of the most widespread groups of insects, but the mechanisms allowing them to coexist despite having similar nutritional needs remain unclear.
Marie Bourel, Eva Faustin, Philippe Tixier, Bernard Raymond Abufera, Dominique Carval   +4 more
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On the out-domination and in-domination numbers of a digraph

Discrete Mathematics, 1999
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Gary Chartrand, Frank Harary, Bill Quan Yue   +2 more
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Total domination and least domination in a tree

Discrete Mathematics, 2003
A subset \(X\) of the vertex set \(V(G)\) of a graph \(G\) is called dominating (or total dominating) in \(G\), if for each \(x\in V(G)- X\) (or for each \(x\in V(G)\), respectively) there exists \(y\in X\) adjacent to \(x\). The least number of vertices of a dominating (or total dominating) set in \(G\) is the domination number \(\gamma(G)\) (or the ...
Xuezheng Lv, Jingzhong Mao
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Generalized domination and efficient domination in graphs

Discrete Mathematics, 1996
The closed neighbourhood of a vertex \(v\) of a graph \(G\) is the set consisting of \(v\) and of all vertices adjacent to \(v\) in \(G\). A function \(f\) which maps the vertex set \(V(G)\) of \(G\) onto a subset \(Y\) of the set of real numbers is called \(Y\)-dominating in \(G\), if the sum of its values over the closed neighbourhood of each vertex \
David W. Bange, Anthony E. Barkauskas, Linda H. Host, Peter J. Slater   +3 more
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Species richness, composition, and dominance of core and climate relicts of African miombo woodlands

Ecosphere
The miombo woodlands, which span about 10% of the African continent, are essential for the ecosystem services they provide. These woodlands are mainly dominated by the genera Julbernardia, Isoberlinia, and Brachystegia.
Brenden Pienaar, Ed T. F. Witkowski, Dave I. Thompson, Justice Muvengwi   +3 more
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Domination versus disjunctive domination in trees

Discrete Applied Mathematics, 2015
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Michael A. Henning, Sinclair A. Marcon
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