Prof Ludwig Streit (Bielefeld) Title: "Integrals without Integrals: QFT Vacua, QM Paths" Abstract: "Integration" over field configurations or over particle paths has become, since Feynman, an indispensable tool of quantum physics. A reliable mathematical framework for this - within infinite dimensional analysis - is less obvious. We shall present one and show that it is suitable for (e.g.) constructive quantum field theory, Feynman integrals with singular interactions, or the Chern- Simons model.