Pandora Equation

Pandora's Equation or Pandora's Büchse is a complex equation created by Albert Einstein that can generate a massive amount of energy. It is the subject of Charlie Thorne and the Last Equation and plays a minor role in Charlie Thorne and the Lost City.

Charlie Thorne and the Last Equation
In Charlie Thorne and the Last Equation, Charlie Thorne and her brother Dante Garcia as well as Special Agent Milana Moon pursue it for the FBI, working against the Furies. They successfully obtain it but Charlie Thorne disappears with it.

Charlie Thorne and the Lost City
In Charlie Thorne and the Lost City, Charlie Thorne uses it as an advantage over her brother so he'll help her get to The lost city.