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# What is NP complete? How to prove if a problem is NP complete?

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A quick demystifier on P/NP/NPH/NPC problems:
https://en.m.wikipedia.org/wiki/NP-hardness#NP-naming_convention

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"NP" is also online slang, an acronym for "No Problem", people (self included) often reply, "NP :)" when thanked.
#disambiguation #lol #factoid #NP

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Usually the way you prove NP-completeness is to find a reduction to a problem that you already know is NP-complete (SAT, travelling salesman, ...)

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Thank you!

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Yes exactly. This is what Prof has written in lecture notes. HCP, TSP