Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am learning algorithms, and there is a chapter which uses linear optimization methods to solve a matching problem. This is the problem definition:

problem screenshot

I find the abbreviations AP for the constraints of the primal problem and APD for the constraints of the dual problem confusing. Could somebody please explain what they stand for in this context?

share|cite|improve this question
up vote 3 down vote accepted

$\text{AP}$ stands for assignment problem or allocation problem. So $\text{AP}_{D}$ is the dual problem.

share|cite|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.