This includes basic notions such as sets and functions: Properties of sets, definition and properties of functions; logarithms and exponentials: and their properties; basic series summations: ...

This includes basic notions such as sets and functions: Properties of sets, definition and properties of functions; logarithms and exponentials: and their properties; basic series summations: ...

That's because the earthquake scale—called the Moment Magnitude Scale, which replaced the Richter Scale—is logarithmic, rather than arithmetic.