NP-hardness

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

In computational complexity theory, a computational problem H is called NP-hard if, for every problem L which can be solved in non-deterministic polynomial-time, there is a polynomial-time reduction from L to H. That is, assuming a solution for H takes 1 unit time, H's solution can be used to solve L in polynomial time.

Excerpt from the Wikipedia article “NP-hardness”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Behnam Esfahbod, CC BY-SA 3.0, via Wikimedia Commons.