电子科发女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC 4.1 Preliminary Concepts Agenda Complex Numbers Fourier Series Impulses and Their Sifting Property The Fourier Transform of Functions of One Continuous variable Convolution Complex Numbers  Fourier Series  Impulses and Their Sifting Property  The Fourier Transform of Functions of One Continuous Variable  Convolution 4.1 Preliminary Concepts Agenda