Ziqi Fang is an instructor and postdoc working across the Department of Mathematics and MIT Open Learning, a role reflecting his interest in advancing mathematical discovery and learning as an integrated effort, especially through large-scale open initiatives such as MIT Learn. His PhD work is in the field of topology and geometry—concerning the “shape” of spaces—with a particular focus on the infinite-dimensional spaces arising from natural geometric structures on manifolds (roughly, a study of “shape of shapes” or “geometry of geometries”). Prior to that, he trained in both pure math and theoretical physics, where he formed a sustained interest in how knowledge is fundamentally interconnected. Complementing his current focus on formalizing mathematics at scale, he likes to think about “informalizing” abstract mathematical ideas—how they can be encountered through intuitive experiences in everyday life and human flourishing. He enjoys shaping this dual perspective through teaching and, more broadly, engagement across curriculum, pedagogy, and community with thought and care.