Paul Siemon (TU Darmstadt): Stacks of parabolic vector bundles and Katz’s middle convolution algorithm
I will discuss the geometry of the cuspidal locus inside stacks of parabolic vector bundles occurring in the tamely ramified geometric Langlands program. I will focus on the example of the stack of rank 2 bundles on the projective line with ramification at four points. Finally, I will outline how the considerations in this example could extend to other situations using Katz’s middle convolution algorithm.

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