# Custom Latex Definitions

**URL:** <https://org-roam.discourse.group/t/custom-latex-definitions/2096>\
**Category:** How To\
**Created:** [October 4, 2021, 6:07pm UTC](https://org-roam.discourse.group/t/custom-latex-definitions/2096 "2021-10-04T18:07:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![avindroth](https://avatars.discourse-cdn.com/v4/letter/a/ee59a6/32.png) [@avindroth](https://org-roam.discourse.group/u/avindroth)\
**Post date:** [October 4, 2021, 6:07pm UTC](https://org-roam.discourse.group/t/custom-latex-definitions/2096/1 "2021-10-04T18:07:52Z")

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What is an elegant way to have custom latex definitions that would be used for all my nodes?  
For instance, I want `$\def\EE{\Bbb E}$` in all my nodes.

EDIT: How do I have the same #+latex\_header in all my nodes?