The theory of functions of a complex variable, is the branch of mathematical analysis that investigates functions of complex numbers.

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Complex analysis, traditionally known as the theory of functions of a complex variable, is the branch of mathematical analysis that investigates functions of complex numbers. It is useful in many branches of mathematics, including algebraic geometry, number theory, analytic combinatorics, applied mathematics; as well as in physics, including hydrodynamics and thermodynamics and also in engineering fields such as nuclear, aerospace, mechanical and electrical engineering.

Murray R. Spiegel described complex analysis as "one of the most beautiful as well as useful branches of Mathematics".

Muhammad Arif Raza

Information Services Department

Riphah International University

G-7/4, Islamabad

Riphah International University

G-7/4, Islamabad