Augustin-Louis Cauchy

Augustin-Louis Cauchy, a French mathematician of the 19th century, is renowned for his significant contributions to various branches of mathematics. One of his notable accomplishments is in calculus, where he formalised the notion of limits and provided rigorous definitions for derivatives and integrals. This work laid the foundation for modern mathematical analysis, enabling the development of calculus as we know it today.

Cauchy also made important advances in algebra, particularly in the study of determinants and linear algebra. He introduced the concept of complex numbers and made important contributions to the theory of equations. His work in algebra laid the groundwork for many subsequent developments in the field.

In addition to his contributions to calculus and algebra, Cauchy played a key role in the development of complex analysis. He established the fundamental theorem of calculus for line integrals and made significant progress in understanding the behaviour of functions of complex variables.

Overall, Augustin-Louis Cauchy is remembered as one of the great mathematicians in history, whose work has had a lasting impact on various areas of mathematics."