# Julia user's guide for the positive semidefinite program with variables in {-1,1}

**URL:** <https://discourse.julialang.org/t/julia-users-guide-for-the-positive-semidefinite-program-with-variables-in-1-1/81460>\
**Category:** Performance\
**Tags:** question\
**Created:** [May 22, 2022, 10:44am UTC](https://discourse.julialang.org/t/julia-users-guide-for-the-positive-semidefinite-program-with-variables-in-1-1/81460 "2022-05-22T10:44:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Huyen26n](https://avatars.discourse-cdn.com/v4/letter/h/f08c70/32.png) [@Huyen26n](https://discourse.julialang.org/u/Huyen26n)\
**Post date:** [May 22, 2022, 10:44am UTC](https://discourse.julialang.org/t/julia-users-guide-for-the-positive-semidefinite-program-with-variables-in-1-1/81460/1 "2022-05-22T10:44:54Z")

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Dear all,  
I am using Julia for the first time to work on the positive semidefinite program. I’m trying to solve the PSD with variables in {-1,1}. I don’t understand how to write objective functions or variables, … I wish to find a document where I can learn to write code for my problem in Julia.  
Can anyone help me? Thanks.

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**Author:** ![Joris\_Pinkse](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joris_pinkse/32/216398_2.png) [@Joris\_Pinkse](https://discourse.julialang.org/u/Joris_Pinkse)\
**Post date:** [May 22, 2022, 5:31pm UTC](https://discourse.julialang.org/t/julia-users-guide-for-the-positive-semidefinite-program-with-variables-in-1-1/81460/2 "2022-05-22T17:31:25Z")

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I don’t know the best answer to your specific question, but [https://jump.dev/](https://jump.dev/) is a great place to start.