John Calabi

John Calabi is an American mathematician known for his work in differential geometry, a field studying curved shapes and spaces. He made significant contributions to understanding complex geometric structures, especially Calabi–Yau manifolds, which are important in theoretical physics, particularly string theory. These manifolds are intricate, multi-dimensional shapes that help scientists explore the fundamental nature of the universe. Calabi’s research has advanced mathematical knowledge and has influenced modern physics by providing tools to model the universe's hidden dimensions.