This course offers a structured introduction to mathematics, finance, and computer programming, with an emphasis on their interactions and applications in the financial field. The objective is to provide students with the essential theoretical foundations in mathematics (algebra, analysis, probability) as well as the basic principles of finance (financial markets, financial instruments, notions of risk and return), while developing practical skills in computer programming. In this module, students will learn to model financial problems, implement calculation methods using computer tools, and rigorously analyze financial data. Particular attention will be paid to problem-solving, practical exercises, and the interpretation of results. This course is primarily aimed at students in mathematics, computer science, economics or finance, and provides a solid foundation for further studies in quantitative finance, data science or financial engineering.