Co-NP

Lesson in the Computer Science Roadmap · Stage 14: Tries

Last updated 14 September 2026

What is Co-NP?

Co-NP stands for the complement of NP Class. It means if the answer to a problem in Co-NP is No, then there is proof that can be checked in polynomial time.

Study this in the interactive course See the whole Computer Science roadmap

Free resources to learn Co-NP

ArticleTrying to understand P vs NP vs NP Complete vs NP Hard
VideoComplexity: P, NP, NP-completeness, Reductions
VideoComplexity: Approximation Algorithms
VideoComplexity: Fixed-Parameter Algorithms
VideoLecture 23: Computational Complexity
VideoGreedy Algs. II & Intro to NP Completeness

Co-NP: common questions

Can I learn Co-NP in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Co-NP in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Co-NP tutorial for beginners?

It is lesson 111 of 188 in the free Computer Science roadmap, in stage 14, Tries. If you are new to Computer Science, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.