He studied at the École Normale Supérieure. After the Dreyfus affair, which involved him personally, he became politically active and became a staunch supporter of Jewish causes.

He introduced the idea of well-posed problem in the theory of partial differential equations. He also gave his name to the Hadamard inequality on volumes, and the Hadamard matrix.

One of his students was André Weil.

Table of contents

1 Writings of Jacques Hadamard 2 External link, Resources, and References 3 Further reading

Writings of Jacques Hadamard

• Biography of Hadamard from the MacTutor History of Mathematics archive