Lexicographic constraint

Answered

Sudheer Reddy

August 13, 2024 04:21

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I have coordinates (x,y) of size n. Here x ,y coordinates are decision variables 

I am trying strict lexicographical ordering (x1,y1) > lex (x2,y2) i.e. x1>x2 or if x1=x2 then y1>y2.

This is logical constraint if x1>x2 is true then no need to add this constraint x1=x2 then y1>y2

Just guide me how to achieve this mathematical form

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 13, 2026 01:21

  This post is more than two years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum, or try Gurobot, our chatbot interface offering instant, expert-level support.
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  Jaromił Najman

  • Gurobi Staff

  August 13, 2024 07:34

  The Knowledge Base article How do I model conditional statements in Gurobi? should be helpful.

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