The Computational Complexity of 3k-CLIQUE: Difference between revisions

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Title: The Computational Complexity of 3k-CLIQUE
Title: The Computational Complexity of 3k-CLIQUE


Research Question: What is the minimum time complexity required for a deterministic and exact algorithm to solve the 3k-CLIQUE problem, which involves finding a clique of size 3k in a given undirected graph?
Research Question: What is the minimum time complexity required for a deterministic and exact algorithm to solve the 3k-CLIQUE problem on a classical computer?


Methodology: The study proposes a method to create an auxiliary graph G′ with O(nk) vertices and O(n2k) edges. The 3-CLIQUE problem on G′ is equivalent to the 3k-CLIQUE problem on the original graph G. The Hadamard product of the adjacency matrix of G′ is used to determine if there is a 3-clique in the graph.
Methodology: The study uses an auxiliary graph technique to reduce the 3k-CLIQUE problem to the 3-CLIQUE problem, which is then solved using existing algorithms. The time complexity of these algorithms is then used to derive the lower bound for the 3k-CLIQUE problem.


Results: The main result is that the fastest deterministic and exact algorithm that solves the 3k-CLIQUE problem must run in Ω( n2k) time in the worst-case scenario on a classical computer, where n is the number of vertices in the graph. This lower bound is confirmed by the fact that the fastest known deterministic and exact algorithm that solves 3k-CLIQUE was published in 1985 and has a running time of Θ( nωk), where ω ≥ 2.
Results: The research finds that the fastest deterministic and exact algorithm that solves the 3k-CLIQUE problem must run in Ω(n2k) time in the worst-case scenario on a classical computer, where n is the number of vertices in the graph.


Implications: This research has significant implications for the field of computational complexity. It sets a lower bound on the time complexity for solving the 3k-CLIQUE problem, which has practical applications in various areas of computer science and mathematics. The results also contribute to our understanding of the limits of deterministic algorithms and the nature of NP-complete problems.
Implications: This result implies that the problem of finding a clique of size 3k in a graph is computationally hard, as it requires at least Ω(n2k) time in the worst-case scenario. This lower bound is confirmed by the fact that the fastest known deterministic and exact algorithm that solves 3k-CLIQUE has a running time of Θ(nωk), where ω ≥ 2.


Link to Article: https://arxiv.org/abs/0310060v13
Significance: This research contributes to the understanding of the computational complexity of graph problems and provides a lower bound for the 3k-CLIQUE problem, which is useful for comparing the efficiency of different algorithms.
 
Link to Article: https://arxiv.org/abs/0310060v9
Authors:  
Authors:  
arXiv ID: 0310060v13
arXiv ID: 0310060v9


[[Category:Computer Science]]
[[Category:Computer Science]]
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[[Category:3K]]
[[Category:3K]]
[[Category:Problem]]
[[Category:Problem]]
[[Category:Graph]]
[[Category:Time]]
[[Category:Complexity]]
[[Category:Complexity]]

Latest revision as of 14:48, 24 December 2023

Title: The Computational Complexity of 3k-CLIQUE

Research Question: What is the minimum time complexity required for a deterministic and exact algorithm to solve the 3k-CLIQUE problem on a classical computer?

Methodology: The study uses an auxiliary graph technique to reduce the 3k-CLIQUE problem to the 3-CLIQUE problem, which is then solved using existing algorithms. The time complexity of these algorithms is then used to derive the lower bound for the 3k-CLIQUE problem.

Results: The research finds that the fastest deterministic and exact algorithm that solves the 3k-CLIQUE problem must run in Ω(n2k) time in the worst-case scenario on a classical computer, where n is the number of vertices in the graph.

Implications: This result implies that the problem of finding a clique of size 3k in a graph is computationally hard, as it requires at least Ω(n2k) time in the worst-case scenario. This lower bound is confirmed by the fact that the fastest known deterministic and exact algorithm that solves 3k-CLIQUE has a running time of Θ(nωk), where ω ≥ 2.

Significance: This research contributes to the understanding of the computational complexity of graph problems and provides a lower bound for the 3k-CLIQUE problem, which is useful for comparing the efficiency of different algorithms.

Link to Article: https://arxiv.org/abs/0310060v9 Authors: arXiv ID: 0310060v9