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Seminar

3-pleated surfaces May 04, 2026 (02:00 PM PDT - 03:00 PM PDT)
Parent Program:
Location: SLMath: Eisenbud Auditorium, Online/Virtual
Speaker(s) Giuseppe Martone (Sam Houston State University)
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Keywords and Mathematics Subject Classification (MSC)
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3-pleated surfaces

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In joint work with Maloni, Mazzoli, and Zhang, we introduced a notion of pleated surfaces for the higher rank Lie group PGL(d,C). These are homomorphisms from a surface group into PGL(d,C) which, in particular, are Anosov along the leaves of a maximal geodesic lamination. We parametrized the space of such d-pleated surfaces using generalized shear-bend cocycles. Moreover, we showed that for each maximal geodesic lamination L, each connected component of the PGL(d,C)-representation variety contains exactly one connected component of the space of PGL(d,C)-conjugacy classes of d-pleated surfaces with pleating locus L. In this talk, I will focus on the case d=3, to highlight some of the key challenges and ideas in our work.

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3-pleated surfaces