# Condition for particular index in array to be maximum

**URL:** <https://discourse.julialang.org/t/condition-for-particular-index-in-array-to-be-maximum/49846>\
**Category:** Optimization (Mathematical)\
**Tags:** question, jump\
**Created:** [November 9, 2020, 2:19pm UTC](https://discourse.julialang.org/t/condition-for-particular-index-in-array-to-be-maximum/49846 "2020-11-09T14:19:04Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [November 9, 2020, 10:28pm UTC](https://discourse.julialang.org/t/condition-for-particular-index-in-array-to-be-maximum/49846/3 "2020-11-09T22:28:19Z")

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Related to [Array variable - matrix multplication in JuMP - #3 by shashankchahar](https://discourse.julialang.org/t/array-variable-matrix-multplication-in-jump/49801/3)

You probably want

```nohighlight
@constraint(model, [i = 1:8, j = 1:8], x[i, i] >= x[i, j])

```

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