Henri Cartan was a prominent French mathematician born on July 8, 1904, and he passed away on August 13, 2008. He is best known for his contributions to the field of algebraic topology and sheaf theory. Cartan played a significant role in the development of modern mathematics and was a key figure in the Bourbaki group, which aimed to reformulate mathematics on a solid foundation. Throughout his career, Cartan received numerous awards and honors, including the prestigious Crafoord Prize in 1984. He was also a dedicated educator, influencing many students and mathematicians through his teaching and mentorship. His work continues to impact various areas of mathematics today.