The Mathematics Handbook, compiled by Alexander Spartalis

"The Mathematics Handbook", v4.1, June 2nd, 2019. 

(formerly known as the "All In One Mathematics Cheat Sheet")

Alexander's web site for the book is here:  

• http://mathscheats.weebly.com/ 

You can find the full PDF here

• https://drive.google.com/file/d/1MM2Hu5qlptkg8dNLM9QibeXHErLz73Qy/view
• Now, 640 pages