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In this paper, we examine the claims made by the paper "A polynomial-time algorithm for 3-SAT" by Lizhi Du. The paper claims to provide a polynomial-time algorithm for solving the NP-complete problem 3-SAT. In examining the paper's…

计算复杂性 · 计算机科学 2024-04-09 Yumeng He , Matan Kotler-Berkowitz , Harry Liuson , Zeyu Nie

In a recent paper by S. Gubin [cs/0701023v1], a polynomial-time solution to the 3SAT problem was presented as proof that P=NP. The proposed algorithm cannot be made to work, which I shall demonstrate.

计算复杂性 · 计算机科学 2007-05-23 Blake Hegerle

In this paper, we examine Quigley's "A Polynomial Time Algorithm for 3SAT" [Qui24]. Quigley claims to construct an algorithm that runs in polynomial time and determines whether a boolean formula in 3CNF form is satisfiable. Such a result…

计算复杂性 · 计算机科学 2025-10-28 Nicholas DeJesse , Spencer Lyudovyk , Dhruv Pai

This paper solves a long standing open problem of whether NP-complete problems could be solved in polynomial time on a deterministic Turing machine by showing that the indistinguishable binomial decision tree can be formed in a 3-SAT…

计算复杂性 · 计算机科学 2018-01-31 Keum-Bae Cho

The question of whether the complexity class P is equal to the complexity class NP has been a seemingly intractable problem for over 4 decades. It has been clear that if an algorithm existed that would solve the problems in the NP class in…

计算复杂性 · 计算机科学 2015-06-04 Jason W. Steinmetz

In this paper, we examine Yangjun Chen's technical report titled ``The 2-MAXSAT Problem Can Be Solved in Polynomial Time'' [Che23], which revises and expands upon their conference paper of the same name [Che22]. Chen's paper purports to…

计算复杂性 · 计算机科学 2024-04-02 Tran Duy Anh Le , Michael P. Reidy , Eliot J. Smith

By creating some new concepts and methods: checking tree, long unit path, direct contradiction unit pair, indirect contradiction unit pair, additional contradiction unit pair, 2-unit layer and 3-unit layer, redundant units, and destroying…

数据结构与算法 · 计算机科学 2026-04-23 Lizhi Du

In this work, we summarize and critique the paper "Understanding SAT is in P" by Alejandro S\'anchez Guinea [arXiv:1504.00337]. The paper claims to present a polynomial-time solution for the NP-complete language 3-SAT. We show that Guinea's…

计算复杂性 · 计算机科学 2017-11-15 Jackson Abascal , Shir Maimon

We lay the foundations of a new theory for algorithms and computational complexity by parameterizing the instances of a computational problem as a moduli scheme. Considering the geometry of the scheme associated to 3-SAT, we separate P and…

计算复杂性 · 计算机科学 2024-02-20 Ali Çivril

This paper proves that there does not exist a polynomial-time algorithm to the the subset sum problem. As this problem is in NP, the result implies that the class P of problems admitting polynomial-time algorithms does not equal the class…

综合数学 · 数学 2020-11-23 Jorma Jormakka

We examine a proof by Craig Alan Feinstein that P is not equal to NP. We present counterexamples to claims made in his paper and expose a flaw in the methodology he uses to make his assertions. The fault in his argument is the incorrect use…

计算复杂性 · 计算机科学 2007-06-15 Kyle Sabo , Ryan Schmitt , Michael Silverman

In this paper, we critically examine Deng's "P=NP" [Den24]. The paper claims that there is a polynomial-time algorithm that decides 3-coloring for graphs with vertices of degree at most 4, which is known to be an NP-complete problem. Deng…

计算复杂性 · 计算机科学 2025-07-15 Isabel Humphreys , Matthew Iceland , Harry Liuson , Dylan McKellips , Leo Sciortino

This is a commentary on, and critique of, Latif Salum's paper titled "Tractability of One-in-three $\mathrm{3SAT}$: $\mathrm{P} = \mathrm{NP}$." Salum purports to give a polynomial-time algorithm that solves the $\mathrm{NP}$-complete…

计算复杂性 · 计算机科学 2021-04-08 Arian Nadjimzadah , David E. Narváez

This paper refutes the validity of the polynomial-time algorithm for solving satisfiability proposed by Sergey Gubin. Gubin introduces the algorithm using 3-SAT and eventually expands it to accept a broad range of forms of the Boolean…

计算复杂性 · 计算机科学 2008-04-18 Ian Christopher , Dennis Huo , Bryan Jacobs

We show that the affirmation $P\subseteq NP$ (in computer science) erroneously and we prove the justice of the hypotesis J.Edmonds's $P\neq NP$. We show further that all the $NP$-complete problems is not polynomial and we give the…

计算复杂性 · 计算机科学 2013-03-12 B. S. Kochkarev

In this paper, we analyze the argument made by Kumar in the technical report "Necessary and Sufficient Condition for Satisfiability of a Boolean Formula in CNF and Its Implications on P versus NP problem." The paper claims to present a…

计算复杂性 · 计算机科学 2021-12-14 Michael C. Chavrimootoo , Henry B. Welles

This paper considers the question of P = NP in context of the polynomial time SAT algorithm. It posits proposition dependent on existence of conjectured problem that even where the algorithm is shown to solve SAT in polynomial time it…

计算复杂性 · 计算机科学 2009-11-30 C. Sauerbier

This paper is a critique of version three of Joonmo Kim's paper entitled "P is not equal to NP by Modus Tollens. [arXiv:1403.4143v3]" After summarizing Kim's proof, we note that the logic that Kim uses is inconsistent, which provides…

计算复杂性 · 计算机科学 2014-04-29 Dan Hassin , Adam Scrivener , Yibo Zhou

Stephen Cook posited SAT is NP-Complete in 1971. If SAT is NP-Complete then, as is generally accepted, any polynomial solution of it must also present a polynomial solution of all NP decision problems. It is here argued, however, that NP is…

计算复杂性 · 计算机科学 2009-11-30 C. Sauerbier

It is shown that any two clauses in an instance of 3SAT sharing the same terminal which is positive in one clause and negated in the other can imply a new clause composed of the remaining terms from both clauses. Clauses can also imply…

计算复杂性 · 计算机科学 2024-06-14 Robert Quigley
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