This textbook requires familiarity with: least upper bound (LUB) and greatest lower bound (GLB), the concept of function, epsilon's and their companion delta's,... » 

This textbook requires familiarity with: least upper bound (LUB) and greatest lower bound (GLB), the concept of function, epsilon's and their companion delta's, and basic properties of sequences of real and complex numbers (convergence, Cauchy's criterion, the Weierstrass-Bolzano theorem). «