Marie Ennemond Camille Jordan
The life of Marie Ennemond Camille Jordan - The civil engineer who built modern mathematics
Jordan Curve Theorem
Every simple closed curve divides the plane into an 'inside' region and an 'outside' region.
\[ \mathbb{R}^2 \setminus C = A \cup B \]
Jordan Normal Form
A block diagonal matrix representation of a linear operator.
\[ J = P^{-1}AP = \text{diag}(J_1, J_2, \dots, J_k) \]
Sources: https://mathshistory.st-andrews.ac.uk/Biographies/Jordan/
