Explore a conference talk on harmonic weak Maass forms associated to even integer weight newforms. Delve into modular forms, integral coefficients, and the LCE invariant as presented by Claudia Alfes Neumann at the Centre International de Rencontres Mathématiques in Marseille, France. Discover key observations on the Riemann Theta function, half-integral weights, and differentials of the Third Kind. Access this 51-minute recording, complete with chapter markers, keywords, abstracts, and bibliographies, through CIRM's Audiovisual Mathematics Library for an in-depth exploration of global invariants in arithmetic varieties.