As I understand this, this book is the one that Ramanujan read that helped him unleash his inner genius. When I first read the link title, I thought this was a

As I understand this, this book is the one that Ramanujan read that helped him unleash his inner genius. When I first read the link title, I thought this was a book written by (or at least co-written by) Ramanujan that unleashed his genius to the greater Mathematical world. I now understand this to be the former, not the latter.