Disclaimer
Is this plugin open source? Yes
Is this plugin completely free? Yes
Is this plugin vibe-coded beyond the author’s ability to comprehend how it works? Yes
Community Directory:https://community.obsidian.md/plugins/lyx-like-math
For LyX live math lovers, I have created a plugin to use LyX live math inside notes; it uses the hotkeys Ctrl+M for inline math and Ctrl+Shift+M for new line math. also has math completion suggestions and a math panel for easier access to symbols.
Link for the plugin: https://community.obsidian.md/plugins/lyx-like-math
For more info, read the description in the community plugin link or the git README.
Short demo GIF of the plugin:

Enjoy!