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Explore complex local systems and their secondary Chern classes in this advanced mathematics lecture. Delve into Esnault's survey article, examining four methods of defining these classes and the proof of equivalence for three of them using the "modified splitting principle." Learn about the demonstration of how Cheeger-Simons' definition aligns with the other three. Shift focus to arithmetic analogs of secondary Chern class rigidity, addressing another question from Esnault's article and considering motivic speculations. Gain insights into this complex mathematical topic presented by Dustin Clausen from the Institut des Hautes Etudes Scientifiques (IHES).
