Results 11 to 20 of about 1,157,729 (290)

An Image Encryption Algorithm Based on Random Hamiltonian Path [PDF]

open access: yesEntropy, 2020
In graph theory, Hamiltonian path refers to the path that visits each vertex exactly once. In this paper, we designed a method to generate random Hamiltonian path within digital images, which is equivalent to permutation in image encryption.
Wei Zhang   +4 more
doaj   +5 more sources

New Sufficient Conditions for Hamiltonian Paths [PDF]

open access: yesThe Scientific World Journal, 2014
A Hamiltonian path in a graph is a path involving all the vertices of the graph. In this paper, we revisit the famous Hamiltonian path problem and present new sufficient conditions for the existence of a Hamiltonian path in a graph.
M. Sohel Rahman   +2 more
doaj   +4 more sources

Parallel Backtracking Algorithm for Hamiltonian Path Search

open access: yesCommunications, 2009
The speed of calculations is a common problem to tackle in many areas of scientific research and real life. This paper presents an implementation of a parallel backtracking algorithm.
Karol Grondzak, Penka Martincova
doaj   +2 more sources

Hamiltonian path analysis of viral genomes [PDF]

open access: yesNature Communications, 2018
Reidun Twarock   +2 more
doaj   +2 more sources

DISTRIBUTED HAMILTONIAN PATH SEARCH ALGORITHM

open access: yesPerner’s Contacts, 2010
Many practical problems of transportation can be transformed to the problem of finding Hamiltonian path or circle. It was proven, that this problem is NP-complete and thus can be very time-consuming for practical problem size. In this paper we present a
Karol Grondžák
doaj   +2 more sources

Lithium Niobate Electro-Optic Photonic Processor for Variational Quantum Eigensolver. [PDF]

open access: yesAdv Sci (Weinh)
An integrated lithium‐niobate‐on‐insulator ququart processor implements an electro‐optically controlled photonic variational quantum eigensolver using single photons encoded in four path modes. Bell‐basis‐emulating ququart projective measurements reduce measurement settings while achieving chemical‐accuracy‐level molecular‐energy estimation.
Lee J   +11 more
europepmc   +2 more sources

Finding Hamiltonian and Longest (s,t)-Paths of C-Shaped Supergrid Graphs in Linear Time

open access: yesAlgorithms, 2022
A graph is called Hamiltonian connected if it contains a Hamiltonian path between any two distinct vertices. In the past, we proved the Hamiltonian path and cycle problems for general supergrid graphs to be NP-complete.
Fatemeh Keshavarz-Kohjerdi, Ruo-Wei Hung
doaj   +1 more source

Quantum Zeno approach for molecular energies with maximum commuting initial Hamiltonians

open access: yesPhysical Review Research, 2021
We propose to use a quantum adiabatic and simulated-annealing framework to compute the ground state of small molecules. The initial Hamiltonian of our algorithms is taken to be the maximum commuting Hamiltonian that consists of a maximal set of commuting
Hongye Yu, Tzu-Chieh Wei
doaj   +1 more source

Linear Hamiltonian behaviors and bilinear differential forms [PDF]

open access: yes, 2004
We study linear Hamiltonian systems using bilinear and quadratic differential forms. Such a representation-free approach allows us to use the same concepts and techniques to deal with systems isolated from their environment and with systems subject to ...
Rapisarda, P.   +7 more
core   +3 more sources

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