Search & link autocomplete
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This plugin provides three different tools for quickly search or insert links to your theorems and equations:

Overview
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This plugin enhances Obsidian's built-in link autocomplete (the one that is triggered when you type [[ in the editor) by displaying formatted theorem titles and rendered equations.

This built-in autocomplete works in a top-down manner: you select a note first, and then choose a theorem or an equation contained in it.
This is useful when you know exactly which note the theorem/equation that you want to reference lives in.

However, it might be also the case you're not very sure where the target theorem/equation is. In that case, you can use either of the following features this plugin offers:

Both of them work in a bottom-up manner as opposed to the built-in completion. Now you have different tools that you can use for different situations.