Results 61 to 70 of about 26,105 (190)

A Lexicographic Product Cancellation Property for Digraphs [PDF]

open access: yes, 2012
There are four prominent product graphs in graph theory: Cartesian, strong, direct, and lexicographic. Of these four product graphs, the lexicographic product graph is the least studied.
Manion, Kendall
core   +1 more source

Sequential properties of lexicographic products

open access: yesTopology and its Applications, 2014
In what follows, \(X\) denotes a Tychonoff (i.e., completely regular, Hausdorff) topological space. Let \(C(X)\) be the ring of all real valued continuous functions defined on \(X\). Each \(f \in C(X)\) defines a \textit{zeroset} of the form \(Z(f) = \{x \in X: f(x) = 0\}\). The complement of a zeroset is a \textit{cozeroset}.
Azarpanah, F., Etebar, M.
openaire   +1 more source

Anselm's Temporal‐Ontological Proof

open access: yesNoûs, EarlyView.
ABSTRACT In his Reply to Gaunilo, Anselm presented two additional arguments for the existence of God beyond those that appear in the Proslogion. In “The Logical Structure of Anselm's Argument,” Robert M. Adams isolates each. One, he develops into a modal ontological argument along the lines of other 20th century ontological arguments (e.g., those of ...
Daniel Rubio
wiley   +1 more source

Geodetic numbers of tensor product and lexicographic product of graphs

open access: yesAKCE International Journal of Graphs and Combinatorics
A shortest [Formula: see text]-[Formula: see text] path between two vertices u and v of a graph G is a [Formula: see text]-[Formula: see text] geodesic of G.
K. Raja Chandrasekar
doaj   +1 more source

L(2, 1)-coloring and irreducible no-hole coloring of lexicographic product of graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2022
An L(2, 1)-coloring (or labeling) of a graph G is a mapping [Formula: see text] such that [Formula: see text] if [Formula: see text] and [Formula: see text] if [Formula: see text] The span of an L(2, 1)-coloring is the maximum color assigned by it.
Nibedita Mandal, Pratima Panigrahi
doaj   +1 more source

WE, ELF and ELT: Perspectives on English and applied linguistics

open access: yesWorld Englishes, EarlyView.
Abstract In a paper which originally set the scene for WE study, Braj Kachu argued that the ‘global diffusion of English’ called for a new paradigm of enquiry which recognized the independent status of varieties of English used by communities other than those of Inner Circle native speakers.
Henry Widdowson
wiley   +1 more source

Sharp Upper Bounds for Generalized Edge-Connectivity of Product Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2016
The generalized k-connectivity κk(G) of a graph G was introduced by Hager in 1985. As a natural counterpart of this concept, Li et al. in 2011 introduced the concept of generalized k-edge-connectivity which is defined as λk(G) = min{λ(S) : S ⊆ V (G) and |
Sun Yuefang
doaj   +1 more source

Finding a mix of renewable energy for different stakeholders by applying multi‐criteria decision‐making techniques

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 4, Page 2499-2534, July 2026.
Abstract This paper presents a two‐stage model for planning a renewable energy portfolio by balancing economic, social and environmental sustainability goals. The first stage addresses a multi‐objective problem where conflictive impacts generated by the energy portfolios should be optimised according to the corresponding economic, social or ...
Amelia Bilbao‐Terol   +2 more
wiley   +1 more source

Utilizing lexicographic max product of picture fuzzy graph in human trafficking

open access: yesAin Shams Engineering Journal
Graph structures are an essential tool for solving combinatorial problems in computer science and computational intelligence. With an emphasis on signed graphs, picture-fuzzy graphs, and graphs with colored or labeled edges, this study explores the ...
Peide Liu   +4 more
doaj   +1 more source

Operations on Intuitionistic Fuzzy Graph Structures

open access: yesFuzzy Information and Engineering, 2016
An intuitionistic fuzzy graph structure (IFGS) is a generalization of an intuitionistic fuzzy graph. The concept of intuitionistic fuzzy graph structure is introduced and investigated in this paper.
Muhammad Akram, Rabia Akmal
doaj   +1 more source

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