Dive into the fundamentals of density functional theory (DFT) in this comprehensive lecture presented by Vikram Gavini from the University of Michigan. Recorded on March 14, 2023, as part of IPAM's New Mathematics for the Exascale: Applications to Materials Science Tutorials at UCLA, this 90-minute session provides an in-depth exploration of DFT principles and their applications in materials science. Gain valuable insights into this powerful computational method used for investigating the electronic structure of many-body systems. Explore how DFT can be applied to solve complex problems in materials science and quantum chemistry, and understand its significance in advancing exascale computing capabilities.