# Dualization.jl PositiveSemidefiniteConeSquare not implemented

**URL:** <https://discourse.julialang.org/t/dualization-jl-positivesemidefiniteconesquare-not-implemented/74861>\
**Category:** Optimization (Mathematical)\
**Tags:** jump\
**Created:** [January 19, 2022, 12:02pm UTC](https://discourse.julialang.org/t/dualization-jl-positivesemidefiniteconesquare-not-implemented/74861 "2022-01-19T12:02:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Thomas](https://avatars.discourse-cdn.com/v4/letter/t/e36b37/32.png) [@Thomas](https://discourse.julialang.org/u/Thomas)\
**Post date:** [January 19, 2022, 12:02pm UTC](https://discourse.julialang.org/t/dualization-jl-positivesemidefiniteconesquare-not-implemented/74861/1 "2022-01-19T12:02:58Z")

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When trying to dualize an SDP I got

> Constraints of function MathOptInterface.VectorAffineFunction{Float64} in the Set MathOptInterface.PositiveSemidefiniteConeSquare are not implemented

Is this by any chance supported in any of the (experimental) branches of Dualization.jl?

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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:** [January 20, 2022, 6:08am UTC](https://discourse.julialang.org/t/dualization-jl-positivesemidefiniteconesquare-not-implemented/74861/2 "2022-01-20T06:08:51Z")

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It isn’t supported at the moment.

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<div class="post-metadata">

**Author:** ![Thomas](https://avatars.discourse-cdn.com/v4/letter/t/e36b37/32.png) [@Thomas](https://discourse.julialang.org/u/Thomas)\
**Post date:** [February 11, 2022, 6:00pm UTC](https://discourse.julialang.org/t/dualization-jl-positivesemidefiniteconesquare-not-implemented/74861/3 "2022-02-11T18:00:28Z")

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Just notice this which might be of interest to some users [https://github.com/jump-dev/Dualization.jl/issues/73](https://github.com/jump-dev/Dualization.jl/issues/73)