Theory of Complex Variable Functions and Operational Calculus . Methodical instructions for a typical calculation” is a unique publication created by a team of authors that immerses the reader in the world of complex but fascinating mathematics. This is not just a textbook, but a real find for students, graduate students and teachers seeking a deeper understanding of the theory of complex variable functions and operational calculus. In this book you will find a systematic approach to the study of complex mathematical concepts. The authors offer the reader not only theoretical foundations, but also practical tasks that will help to consolidate the knowledge gained. The focus is on problem-solving techniques, which makes this book particularly useful for those preparing for exams or doing coursework. Unlike many other textbooks, the emphasis here is on the practical application of theory, allowing the reader to see how abstract mathematical concepts can be used to solve real-world problems. The book will be of interest to students of technical and natural sciences, as well as to anyone who is fond of mathematics and wants to expand their knowledge in the field of complex analysis and operational calculus. If you study at the Faculty of Mathematics, Physics, Engineering or Computer Science, this publication will become an indispensable assistant for you. It is suitable both for self-study and for use in the educational process. The topics raised in the book cover a wide range of issues, including the foundations of complex function theory, integrals and series, and methods of operational calculus. The authors pay attention not only to theoretical aspects, but also to practical applications, which makes the material more accessible and understandable. The reader will be able to get acquainted with various methods of analysis and their application in various fields of science and technology .. This publication not only develops mathematical thinking, but also helps to form the skills needed to solve complex problems. The style of the authors is distinguished by clarity and logical presentation, which makes complex topics more accessible to perception. Each section of the book is accompanied by examples and tasks, which allows the reader not only to assimilate the material, but also to apply it in practice. This is especially important for students who often face difficulties in understanding the theoretical aspects of mathematics. Theory of Complex Variable Functions and Operational Calculus . Methodological Guidelines for Model Calculation" is part of a wider range of literature devoted to mathematics and its applications. It can be compared to works such as Larsson's Complex Analysis or D.'s Operational Calculus. K. Martins, but stands out for his practical approach and accessible presentation. If you are looking for a high-quality textbook that will help you understand complex mathematical concepts, this book will be an excellent choice. It will not only deepen your knowledge, but also inspire you to further study mathematics. Do not miss the opportunity to take a step to new heights in the world of complex analysis and operational calculus - this book is waiting for you!