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This article is a list of notable unsolved problems in computer science. A problem in computer science is considered unsolved when no solution is known or when experts in the field disagree about proposed solutions.
An answer to the P versus NP question would determine whether problems that can be verified in polynomial time can also be solved in polynomial time. If P ≠ NP, which is widely believed, it would mean that there are problems in NP that are harder to compute than to verify: they could not be solved in polynomial time, but the answer could be ...
The question then is, whether there exists an algorithm that maps instances to solutions. For example, in the factoring problem, the instances are the integers n, and solutions are prime numbers p that are the nontrivial prime factors of n. An example of a computational problem without a solution is the Halting problem. Computational problems ...
"A large-scale quantum computer would be able to efficiently solve NP-complete problems." The class of decision problems that can be efficiently solved (in principle) by a fault-tolerant quantum computer is known as BQP. However, BQP is not believed to contain all of NP, and if it does not, then it cannot contain any NP-complete problem. [15]
Digital Science & Research Solutions Ltd: Directory of Open Access Journals (DOAJ) [36] Multidisciplinary: 8,265,735 Articles from 18,652 open access journals (Dec 2022) Free Infrastructure Services for Open Access (IS4OA) DBLP [37] Computer science: 5,387,041 Comprehensive list of papers from major computer science conferences and journals Free
As blackouts, food, fuel and labor shortages in Cuba grow more acute by the day, a trip to the Caribbean island has become a hard sell. Cuban government statistics tell the story: Earlier this ...
Science & Tech. Sports. Weather. NFL Week 18 betting: 7 best lines, props and more, including the Vikings-Lions clash. Frank Schwab. January 2, 2025 at 1:53 PM.
A judge told the parents of 27-year-old Ellen Greenberg, a Philadelphia teacher found dead with 20 stab wounds in 2011, that the city's declaration of suicide was "puzzling."