TITLE: Learning to read complex math formulas
QUESTION [13 upvotes]: could anybody point me to a book or article where I could learn how to read formulas like this one: 

I have no idea what that means.

REPLY [5 votes]: This comprehensive pdf could be useful:
Handbook for Spoken Mathematics
It represents the mathematical symbols and explains how to read them.
for example:
https://ibb.co/cjturF