How to handle non-linear inequality constraints with bounds?

#how to code non-linear ineqality constraints. example:-

• Pimin<=Pi<=Pli,1
• Pui,j-1<=Pi<=Pli,j j=2,3,…….ni
• Pli,ni<=Pi<=Pimax

how do I code the above equations??

[Torsten]

The context of your question is missing.

Best wishes

Torsten.

[JL555]

@torsten- how do I code the above equations. thank you