# Nested optimization - matrix multiplication and internal functions

**URL:** <https://discourse.julialang.org/t/nested-optimization-matrix-multiplication-and-internal-functions/118098>\
**Category:** Optimization (Mathematical)\
**Tags:** jump\
**Created:** [August 12, 2024, 3:15pm UTC](https://discourse.julialang.org/t/nested-optimization-matrix-multiplication-and-internal-functions/118098 "2024-08-12T15:15:07Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![nsajko](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nsajko/32/221187_2.png) [@nsajko](https://discourse.julialang.org/u/nsajko)\
**Post date:** [August 12, 2024, 3:30pm UTC](https://discourse.julialang.org/t/nested-optimization-matrix-multiplication-and-internal-functions/118098/2 "2024-08-12T15:30:13Z")

</div>

As usual, please give the complete error message, in a Markdown code block (with ````julia-repl`), instead of a screenshot. See the PSA for more such advice:

> [@Please read: make it easier to help you](https://discourse.julialang.org/t/please-read-make-it-easier-to-help-you/14757):
>
> Welcome to the Julia Discourse! We are enthusiastic about helping Julia programmers, both beginner and experienced. This public service announcement (PSA) outlines best practices when asking for help. Following these points makes it easier for us to help you and more likely you’ll get a prompt, useful answer. Keywords are highlighted to make it easier to refer to specific points. Choose a descriptive title that captures the key part of your question, eg “plots with multiple axes” instead of …

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_[View the full topic](https://discourse.julialang.org/t/nested-optimization-matrix-multiplication-and-internal-functions/118098)._