Quantum Algorithm for Finding a Maximum Clique in an Undirected Graph

<p class="Abstract">The maximum clique in an undirected graph is the largest subset of  a set of graph's vertices where each pair of elements in the subset is connected. In this paper I would like to propose an algorithm for quantum computers that finds a maximum clique in an ar...

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Main Author: Alan Bojić
Format: Article
Language:English
Published: University of Zagreb, Faculty of organization and informatics 2012-12-01
Series:Journal of Information and Organizational Sciences
Subjects:
Online Access:http://jios.foi.hr/index.php/jios/article/view/624
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author Alan Bojić
author_facet Alan Bojić
author_sort Alan Bojić
collection DOAJ
description <p class="Abstract">The maximum clique in an undirected graph is the largest subset of  a set of graph's vertices where each pair of elements in the subset is connected. In this paper I would like to propose an algorithm for quantum computers that finds a maximum clique in an arbitrary undirected graph. An algorithm has O(|V|2<sup>|V|/2</sup>) worst case time complexity and O(2<sup>|V|/2</sup>) best case time complexity. Algorithm's space complexity for each case is O(|V|). An algorithm is based on a version of Grover's  quantum algorithm for finding element in an unsorted list in which there can be an unknown number of solutions.</p>
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spelling doaj.art-f4976d0bdfea40d5badf4bb9e9134e072022-12-21T21:28:32ZengUniversity of Zagreb, Faculty of organization and informaticsJournal of Information and Organizational Sciences1846-33121846-94182012-12-01362662Quantum Algorithm for Finding a Maximum Clique in an Undirected GraphAlan Bojić<p class="Abstract">The maximum clique in an undirected graph is the largest subset of  a set of graph's vertices where each pair of elements in the subset is connected. In this paper I would like to propose an algorithm for quantum computers that finds a maximum clique in an arbitrary undirected graph. An algorithm has O(|V|2<sup>|V|/2</sup>) worst case time complexity and O(2<sup>|V|/2</sup>) best case time complexity. Algorithm's space complexity for each case is O(|V|). An algorithm is based on a version of Grover's  quantum algorithm for finding element in an unsorted list in which there can be an unknown number of solutions.</p>http://jios.foi.hr/index.php/jios/article/view/624quantum computing, quantum algorithm, maximum clique
spellingShingle Alan Bojić
Quantum Algorithm for Finding a Maximum Clique in an Undirected Graph
Journal of Information and Organizational Sciences
quantum computing, quantum algorithm, maximum clique
title Quantum Algorithm for Finding a Maximum Clique in an Undirected Graph
title_full Quantum Algorithm for Finding a Maximum Clique in an Undirected Graph
title_fullStr Quantum Algorithm for Finding a Maximum Clique in an Undirected Graph
title_full_unstemmed Quantum Algorithm for Finding a Maximum Clique in an Undirected Graph
title_short Quantum Algorithm for Finding a Maximum Clique in an Undirected Graph
title_sort quantum algorithm for finding a maximum clique in an undirected graph
topic quantum computing, quantum algorithm, maximum clique
url http://jios.foi.hr/index.php/jios/article/view/624
work_keys_str_mv AT alanbojic quantumalgorithmforfindingamaximumcliqueinanundirectedgraph