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NP-complete Problems
In computational complexity theory, NP-complete problems are the hardest of the problems to which ''solutions'' can be verified ''quickly''. Somewhat more precisely, a problem is NP-complete when: # It is a decision problem, meaning that for any input to the problem, the output is either "yes" or "no". # When the answer is "yes", this can be demonstrated through the existence of a short (polynomial length) ''solution''. # The correctness of each solution can be verified quickly (namely, in polynomial time) and a brute-force search algorithm can find a solution by trying all possible solutions. # The problem can be used to simulate every other problem for which we can verify quickly that a solution is correct. Hence, if we could find solutions of some NP-complete problem quickly, we could quickly find the solutions of every other problem to which a given solution can be easily verified. The name "NP-complete" is short for "nondeterministic polynomial-time complete". In this name, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3SAT 17 Svg
3sat (, ''Dreisat'') is a free-to-air German-language public service television channel. It is a generalist channel with a cultural focus and is jointly operated by Public broadcasting, public broadcasters from Germany (ZDF, ARD (broadcaster), ARD), Austria (ORF (broadcaster), ORF) and Switzerland (SRG SSR). The coordinating broadcaster is ZDF, at whose Mainz facility the broadcasting centre with studios for in-house productions is located. History 3sat was established to broadcast high culture, cultural programmes, originally by satellite. The network was founded as a cooperative network by Germany's ZDF, Austria's ORF (broadcaster), ORF, and Switzerland's SRG SSR (formerly SRG SSR idée suisse). 3sat began broadcasting on 1 December 1984, with its first programme being simulcasted on ORF 2, FS2, SRF 1, TV DRS and ZDF. ZDF leads the cooperative, though decisions are reached through consensus of the cooperative's partners. In 1990, Deutscher Fernsehfunk, DFF, television broadc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
