I checked out a copy of Raúl Rojas’s The Language of Mathematics: The Stories behind the Symbols at my local library this morning. As the subtitle says, it covers the history and eventual standardization of many many mathematical symbols. The book is several years old, but the English translation (by Eduardo Aparicio from the original Spanish) is new. I first read about it in this Scientific American article (that’s an Apple News link).
e = get, head
Dive into said