**UPDATE: Oh the irony. The HTML special character code does not work in a Post Title on the Post Topics Main Listing page nor in the Topic Sidebar. As you can see it works fine below (and the title of the topic page itself, but I removed it from my title for now). I have a prediction — Tesla will fix this bug before the Model ≡ is released.
I'll add a section to my Tips & Tricks on this topic, but to help folks find it I thought I would do a quick post first. Thanks to @Red Sage for suggesting this with his in-depth explanation of how he was doing it in the Model III Post.
I use the HTML character code for "identical to":
≡ or ≡
≡ or ≡
Found here: http://character-code.com/math-html-codes.php
You can wrap it with other tags too. Like so <h1>:
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