A 4-dimensional pseudo-Anosov homeomorphism

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• Bruno Martelli (Pisa)
• Wednesday 04 February 2026, 16:00-17:00
• MR13.

If you have a question about this talk, please contact Oscar Randal-Williams.

We know from previous work with Italiano and Migliorini that there exists some hyperbolic 5-manifold that fibers over the circle. We show one example where the monodromy is a “pseudo-Anosov homeomorphism” of the 4-dimensional fiber, in a way that is surprisingly similar to the familiar and beautiful two-dimensional picture of Nielsen and Thurston for surfaces.

This talk is part of the Differential Geometry and Topology Seminar series.

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