**Olga Alexandrovna Ladyzhenskaya** (1922-2004) occupies a very special place in the history of mathematics and mathematical physics worldwide. Her theorems shaped the modern theory of Partial Differential Equations of mathematical physics. Through her lectures, seminars, and students, she inspired extraordinary advances in many other branches of mathematical physics, including Quantum Field Theory and Statistical Physics.

Below, **Olga Alexandrovna Ladyzhenskaya** pictured by Constanza Rojas-Molina.