Results 11 to 20 of about 805,669 (72)

Connectivity Index in Vague Graphs with Application in Construction

open access: yesDiscrete Dynamics in Nature and Society, 2022
The vague graph (VG), which has recently gained a place in the family of fuzzy graph (FG), has shown good capabilities in the face of problems that cannot be expressed by fuzzy graphs and interval-valued fuzzy graphs. Connectivity index (CI) in graphs is
Huiqin Jiang, Yongsheng Rao
doaj   +1 more source

Interval Valued Intuitionistic Fuzzy Line Graphs

open access: yesBMC Research Notes, 2022
Objectives In the field of graph theory, an intuitionistic fuzzy set becomes a useful tool to handle problems related to uncertainty and impreciseness. We introduced the interval-valued intuitionistic fuzzy line graphs (IVIFLG) and explored the results ...
V. N. Srinivasa Rao Repalle   +2 more
doaj   +1 more source

Consensus of Second-Order Heterogeneous Hybrid Multiagent Systems via Event-Triggered Protocols

open access: yesComplexity, 2022
This paper investigates the event-based consensus problem for the heterogeneous hybrid multiagent system (MAS). First, the heterogeneous hybrid MAS is proposed which contains continuous and discrete-time subsystems with second-order and first-order ...
Hong Zhang, Yanhan Li, Ying Zheng
doaj   +1 more source

Fault Detection of Landing Gear Retraction/Extension Hydraulic System Based on Bond Graph-Linear Fractional Transformation Technique and Interval Analytic Redundancy Relations

open access: yesApplied Sciences, 2022
Fault detection in the landing gear retraction/extension hydraulic system is difficult due to uncertainties in component parameters and sensor measurement values.
Yuyuan Cao   +5 more
doaj   +1 more source

On Generalizations of Pairwise Compatibility Graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
A graph $G$ is a pairwise compatibility graph (PCG) if there exists an edge-weighted tree and an interval $I$, such that each leaf of the tree is a vertex of the graph, and there is an edge $\{ x, y \}$ in $G$ if and only if the weight of the path in the
Tiziana Calamoneri   +3 more
doaj   +1 more source

Distributed Coordination for a Class of High-Order Multiagent Systems Subject to Actuator Saturations by Iterative Learning Control

open access: yesComplexity, 2022
This paper investigates a distributed coordination control for a class of high-order uncertain multiagent systems. Under the framework of iterative learning control, a novel fully distributed learning protocol is devised for the coordination problem of ...
Nana Yang, Suoping Li
doaj   +1 more source

The phylogeny graphs of doubly partial orders [PDF]

open access: yesDiscussiones Mathematicae Graph Theory 33 (2013) 657-664, 2011
The competition graph of a doubly partial order is known to be an interval graph. The CCE graph and the niche graph of a doubly partial order are also known to be interval graphs if the graphs do not contain a cycle of length four and three as an induced subgraph, respectively. Phylogeny graphs are variant of competition graphs.
arxiv   +1 more source

$L(p,q)$-Labeling of Graphs with Interval Representations [PDF]

open access: yesDiscussiones Mathematicae Graph Theory 43(4) (2023) 1215-1235, 2019
We provide upper bounds on the $L(p,q)$-labeling number of graphs which have interval (or circular-arc) representations via simple greedy algorithms. We prove that there exists an $L(p,q)$-labeling with span at most $\max\{2(p+q-1)\Delta-4q+2, (2p-1)\mu+(2q-1)\Delta-2q+1\}$ for interval $k$-graphs, $\max\{p,q\}\Delta$ for interval graphs, $3\max\{p,q\}\
arxiv   +1 more source

Interval-Valued Fuzzy Soft Graphs

open access: yesTopological Algebra and its Applications, 2017
In this paper, we combine concepts of interval-valued fuzzy soft sets and graph theory. Then we introduce notations of interval-valued fuzzy soft graphs and complete interval-valued fuzzy soft graphs.
Zihni Onur   +2 more
doaj   +1 more source

Closed orders and closed graphs

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
The class of closed graphs by a linear ordering on their sets of vertices is investigated. A recent characterization of such a class of graphs is analyzed by using tools from the proper interval graph theory.
Crupi Marilena
doaj   +1 more source

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