Mark Dominus on Nostr: This is the world's first use of the modern equals sign, from Robert Recorde's 1557 ...

This is the world's first use of the modern equals sign, from Robert Recorde's 1557 book _The Whetstone of Witte_.

(Screencap from Internet Archive's scan of the book: https://archive.org/details/TheWhetstoneOfWitte/page/n237/mode/2up)

(I also wrote a blog post a couple of years back explaining what it says if you are interested: https://blog.plover.com/math/recorde.html)