Results 51 to 60 of about 1,865,243 (219)

Evolutionary Method of Sink Node Path Planning Guided by the Hamiltonian of Quantum Annealing Algorithm

open access: yesIEEE Access, 2021
In order to solve the NP-hard problem of mobile sink path planning in wireless sensor networks (WSN) where the communication range is modeled as a circular area and overlaps with each other, this paper proposes a sink node path planning method guided by ...
Zhijie Huang   +4 more
doaj   +1 more source

Forbidden subgraphs that imply Hamiltonian-connectedness [PDF]

open access: yes, 1999
It is proven that if $G$ is a $3$-connected claw-free graph which is also $Z_3$-free (where $Z_3$ is a triangle with a path of length $3$ attached), $P_6$-free (where $P_6$ is a path with $6$ vertices) or $H_1$-free (where $H_1$ consists of two disjoint ...
Broersma, H.J.   +4 more
core   +2 more sources

Three infinite families of Hamilton-connected convex polytopes and their detour index

open access: yesAIMS Mathematics
A path in a graph encompassing its whole vertex set is called Hamiltonian. Such a path with sharing the same initial and terminal vertices is called a Hamiltonian cycle. A graph comprising a Hamiltonian path (resp.
Sakander Hayat   +3 more
doaj   +1 more source

The Color Number of Cubic Graphs Having a Spanning Tree with a Bounded Number of Leaves

open access: yesTheory and Applications of Graphs, 2021
The color number c(G) of a cubic graph G is the minimum cardinality of a color class of a proper 4-edge-coloring of G. It is well-known that every cubic graph G satisfies c(G) = 0 if G has a Hamiltonian cycle, and c(G) ≤ 2 if G has a Hamiltonian path. In
Analen Malnegro   +2 more
doaj   +1 more source

Chromatic Roots and Hamiltonian Paths

open access: yesJournal of Combinatorial Theory, Series B, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Hamiltonian Paths in Some Classes of Grid Graphs

open access: yesJournal of Applied Mathematics, 2012
The Hamiltonian path problem for general grid graphs is known to be NP-complete. In this paper, we give necessary and sufficient conditions for the existence of Hamiltonian paths in L-alphabet, C-alphabet, F-alphabet, and E-alphabet grid graphs.
Fatemeh Keshavarz-Kohjerdi   +1 more
doaj   +1 more source

On hamiltonian chain saturated uniform hypergraphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
Graphs and ...
Aneta Dudek, Andrzej Zak
doaj   +1 more source

Backtracking Algorithms for Constructing the Hamiltonian Decomposition of a 4-regular Multigraph

open access: yesМоделирование и анализ информационных систем, 2021
We consider a Hamiltonian decomposition problem of partitioning a regular graph into edge-disjoint Hamiltonian cycles. It is known that verifying vertex non-adjacency in the 1-skeleton of the symmetric and asymmetric traveling salesperson polytopes is an
Alexander V. Korostil   +1 more
doaj   +1 more source

Quantum free energy differences from non-equilibrium path integrals: I. Methods and numerical application

open access: yes, 2008
The imaginary-time path integral representation of the canonical partition function of a quantum system and non-equilibrium work fluctuation relations are combined to yield methods for computing free energy differences in quantum systems using non ...
B. J. Berne   +11 more
core   +1 more source

Absolute Differences Along Hamiltonian Paths

open access: yesThe Electronic Journal of Combinatorics, 2015
We prove that if the vertices of a complete graph are labeled with the elements of an arithmetic progression, then for any given vertex there is a Hamiltonian path starting at this vertex such that the absolute values of the differences of consecutive vertices along the path are pairwise distinct.
openaire   +3 more sources

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