• In computer science, 2-satisfiability, 2-SAT or just 2SAT is a computational problem of assigning values to variables, each of which has two possible...
    64 KB (9,112 words) - 06:21, 30 December 2024
  • science, the Boolean satisfiability problem (sometimes called propositional satisfiability problem and abbreviated SATISFIABILITY, SAT or B-SAT) asks whether...
    50 KB (5,045 words) - 17:15, 20 May 2025
  • meaning by providing additional axioms. The satisfiability modulo theories problem considers satisfiability of a formula with respect to a formal theory...
    12 KB (1,500 words) - 23:20, 22 May 2025
  • Thumbnail for Median graph
    It is also possible to define median graphs as the solution sets of 2-satisfiability problems, as the retracts of hypercubes, as the graphs of finite median...
    46 KB (6,003 words) - 06:48, 12 May 2025
  • most 2 literals, as in 2-satisfiability, we get the MAX-2SAT problem. If they are restricted to at most 3 literals per clause, as in 3-satisfiability, we...
    13 KB (1,509 words) - 02:36, 29 December 2024
  • logic, Horn-satisfiability, or HORNSAT, is the problem of deciding whether a given conjunction of propositional Horn clauses is satisfiable or not. Horn-satisfiability...
    10 KB (1,073 words) - 07:50, 6 February 2025
  • placed, then it may be solved efficiently by using an instance of 2-satisfiability to find a placement avoiding any conflicting pairs of placements; several...
    12 KB (1,569 words) - 08:36, 13 December 2024
  • drawing, and in the implication graphs used to efficiently solve the 2-satisfiability problem. As defined, e.g., by Goldberg & Karzanov (1996), a skew-symmetric...
    17 KB (2,318 words) - 08:39, 16 July 2024
  • mathematical logic, satisfiability modulo theories (SMT) is the problem of determining whether a mathematical formula is satisfiable. It generalizes the...
    46 KB (4,371 words) - 23:30, 22 May 2025
  • ST-connectivity and 2-satisfiability. ST-connectivity asks, for nodes S and T in a directed graph, whether T is reachable from S. 2-satisfiability asks, given...
    11 KB (1,570 words) - 04:06, 12 May 2025
  • the satisfiability of a Boolean formula in disjunctive normal form is easy: such a formula is satisfiable if and only if it contains a satisfiable conjunction...
    7 KB (849 words) - 16:01, 27 November 2024
  • computational complexity, not-all-equal 3-satisfiability (NAE3SAT) is an NP-complete variant of the Boolean satisfiability problem, often used in proofs of NP-completeness...
    5 KB (641 words) - 00:53, 13 February 2025
  • Thumbnail for Strongly connected component
    Algorithms for finding strongly connected components may be used to solve 2-satisfiability problems (systems of Boolean variables with constraints on the values...
    13 KB (1,639 words) - 04:26, 19 May 2025
  • is a given edge in the minimum weight spanning forest? Exclusive or 2-satisfiability: given a formula requiring that x i {\displaystyle x_{i}} or x j {\displaystyle...
    14 KB (1,793 words) - 15:43, 24 May 2024
  • showed that WalkSAT, a randomized algorithm previously analyzed for 2-satisfiability by Papadimitriou, had good expected time complexity (although still...
    5 KB (603 words) - 09:53, 15 March 2025
  • Thumbnail for Adi Shamir
    cryptography, such as finding the first linear time algorithm for 2-satisfiability and showing the equivalence of the complexity classes PSPACE and IP...
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  • Thumbnail for Implication graph
    were originally used for analyzing complex Boolean expressions. A 2-satisfiability instance in conjunctive normal form can be transformed into an implication...
    3 KB (270 words) - 16:38, 24 June 2024
  • Thumbnail for Harry R. Lewis
    expressible as an instance of 2-satisfiability, the other solvable case of the satisfiability problem. By solving a 2-satisfiability instance to turn the given...
    55 KB (4,524 words) - 20:15, 13 May 2025
  • Thumbnail for Nonogram
    in polynomial time by transforming the problem into an instance of 2-satisfiability. An extensive comparison and discussion of nonogram solving algorithms...
    34 KB (4,542 words) - 19:19, 20 April 2025
  • decision problems (even though, for example, finding the solution to a 2-satisfiability instance in polynomial time automatically gives a polynomial algorithm...
    15 KB (1,940 words) - 18:57, 10 May 2025
  • Thumbnail for NP-completeness
    the 3-satisfiability problem, a restriction of the Boolean satisfiability problem, remains NP-complete, whereas the slightly more restricted 2-satisfiability...
    30 KB (3,618 words) - 08:25, 21 May 2025
  • state to an accepting state. Another important NL-complete problem is 2-satisfiability (Papadimitriou 1994 Thrm. 16.3), the problem of determining whether...
    5 KB (659 words) - 02:58, 26 December 2024
  • determining if a partially filled square can be completed) Maximum 2-satisfiability: LO5  Maximum volume submatrix – Problem of selecting the best conditioned...
    29 KB (2,746 words) - 00:31, 24 April 2025
  • True quantified Boolean formula (category Satisfiability problems)
    quantified Boolean formula problem (QBF) is a generalization of the Boolean satisfiability problem in which both existential quantifiers and universal quantifiers...
    26 KB (3,846 words) - 03:42, 18 May 2025
  • Thumbnail for The Art of Computer Programming
    Fascicle 2 in 2005. The hardback Volume 4A, combining Volume 4, Fascicles 0–4, was published in 2011. Volume 4, Fascicle 6 ("Satisfiability") was released...
    38 KB (4,118 words) - 12:17, 25 April 2025
  • problem Integer factorization Knapsack problem Satisfiability problem 2-satisfiability Boolean satisfiability problem Subset sum problem 3SUM Traveling salesman...
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  • Thumbnail for Arc diagram
    may be found in polynomial time by translating the problem into a 2-satisfiability problem, in which the variables represent the placement of each arc...
    22 KB (2,597 words) - 02:23, 31 March 2025
  • Each clause contains 2 literals. The satisfiability of such formulas can be decided in time linear in the number of clauses (see 2-SAT). Therefore, the...
    18 KB (2,546 words) - 07:54, 16 July 2024
  • Thumbnail for Maximal independent set
    or the maximal matching problem or by an N C 2 {\displaystyle NC^{2}} reduction from the 2-satisfiability problem. Typically, the structure of the algorithm...
    40 KB (5,451 words) - 22:03, 17 March 2025
  • Planning as Satisfiability) is a method for automated planning. It converts the planning problem instance into an instance of the Boolean satisfiability problem...
    4 KB (385 words) - 15:12, 19 February 2025