I was doing some research on this earlier and found 2 resources that give some guidance:
1. [Cambridge International Mathematical Notation 2020](https://www.cambridgeinternational.org/Images/420009-mathematics-notation-list-.pdf)):
> 2 Miscellaneous symbols
...
> ≡ is identical to or is congruent to
2. [The Unicode® Standard](https://hub.toolforge.org/Q8819?property=P856): https://util.unicode.org/UnicodeJsps/character.jsp?a=%E2%89%A1 (indexed [here](https://www.wikidata.org/wiki/Q7843500#Q7843500$a7b02f9b-4188-c523-4ee3-ecb176ac83db) as well)
Elefy
·
2026-06-16T11:44:28Z (3 months ago)