REA’s Essentials

provide quick and easy access to critical information in a variety of different fields, ranging from the most basic to the most advanced. As its name implies, these concise, comprehensive study guides summarize the essentials of the field covered.

Essentials are helpful when preparing for exams, doing homework and will remain a lasting reference source for students, teachers, and professionals.

Complex Variables II

includes elementary mappings and Mobius transformation, mappings by general functions, conformal mappings and harmonic functions, applying complex functions to applied mathematics, analytic continuation, and analytic function properties.