Since 2002 Perimeter Institute has been recording seminars, conference talks, and public outreach events using video cameras installed in our lecture theatres. Perimeter now has 7 formal presentation spaces for its many scientific conferences, seminars, workshops and educational outreach activities, all with advanced audio-visual technical capabilities. Recordings of events in these areas are all available On-Demand from this Video Library and on Perimeter Institute Recorded Seminar Archive (PIRSA). PIRSA is a permanent, free, searchable, and citable archive of recorded seminars from relevant bodies in physics. This resource has been partially modelled after Cornell University's arXiv.org.
In these two lectures I will present on overview of topological string theory, starting with the basic concepts and continuing to the most recent developments. Aspects that will be covered are: closed and open strings, Gromov-Witten theory, matrix models, quantum crystals, and special holonomy manifolds. I will end with some more speculative thoughts about the non-perturbative definition of (topological) string theory and quantum geometry.
Galileos campaign on behalf of the modern view of the solar system is one of the most dramatic events in the history of relations between Christianity and science endlessly portrayed as a battle between theological interests and scientific freedom. But this traditional story is filled with factual errors. And when human fears, rivalries, revenge and the like are taken into account, the story takes on an altogether different cast. In Professor Lindbergs retelling, the ideological side of the story will be balanced with its richness as a human event.