The 2021 Abel Prize was awarded to Lászlo Lovász and Avi Wigderson “For their foundational contributions to theoretical computer science and discrete mathematics, and their leading role in shaping them into central fields of modern mathematics.” While Lovász is a mathematician whose work affects computer science, Wigderson is a computer scientist whose work affects mathematics. In this article Ronald de Wolf gives a brief overview of some highlights of Wigderson’s wide-ranging work and influence.