These books has been prepared by a group of faculties who are highly experienced in training GATE candidates and are also subject matter experts. As a result these books would serve as a one-stop solution for any GATE aspirant to crack the examination. Coverage is as per the syllabus prescribed for GATE and topics are handled in a comprehensive manner- beginning from the basics and progressing in a step-by- step manner supported by ample number of solved and unsolved problems. Extra care has been taken to present the content in a modular and systematic manner - to facilitate easy understanding of all topics.