Sam Ballas

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About me

I am currently an an assistant professor in the Department of Mathematics at Florida State University.

Previously I was an RTG visiting assistant professor at UC Santa Barbara. Before that I was a graduate student at The University of Texas at Austin under the supervision of Alan Reid.

If you want to learn more about me feel free to check out my CV.

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My research is primarily concerned with understanding various types of geometric structures on manifolds. Studying these structures typically involves the interplay of techniques from algebra, geometry, and topology.

My research is currently supported by the National Science Foundation (DMS-1709097)


  1. Generalized cusps in real projective manifolds: classification
    joint with Daryl Cooper and Arielle Leitner, arXiv:1710.03132
  2. Rank 1 deformations of non-compact hyperbolic lattices
    joint with Julien Paupert and Pierre Will, arXiv:1702.00508
  3. Convex projective bendings of hyperbolic manifolds
    joint with Ludovic Marquis, arXiv:1609.03046
  4. Convex projective structures on non-hyperbolic three-manifolds
    joint with J. Danciger and G.-S. Lee, To appear in Geom. Topol.
  5. Constructing thin subgroups commensurable with the figure-eight knot group
    joint with Darren Long, Algebr. Geom. Topol. 15 (2015), no. 5, 3011–3024

Work in progress

Copies may be available upon request

  1. Generalized cusps in real projective manifolds: deformations
    joint with Daryl Cooper and Arielle Leitner


  1. A Geometric Description of (P)SL(4,R) Hitchin Representations
    notes from workshop on higher teichmuller theory


Current Courses

  • Fall 2018: MAP2302 Oridinary Differential Equations

Older Courses


Math Fun Day 2017

  • Wisdom of the masses: a talk about using probability to calculate \(\pi\).

Ireland Sunrise


Upcoming Travel

  1. Visit to UGA
    (Athens, GA 4/2018)
  2. Thin groups in Number Theory, Geometry and Topology
    Darren Long 60th birthday conference
    (Houston, TX 5/2018)

Invited Talks

  1. Generalized Cusps in Convex Projective Manifolds (Slides,Video)
    (GEAR Retreat, Stanford Univeristy, 8/7/2017)
  2. Generalized Cusps in Convex Projective Manifolds
    (Workshop on Dynamics on Character Varieties, University of Rennes I, 6/29/2017)
  3. Rank 1 Deformations of Non-cocompact Hyperbolic Lattices
    (University of Texas at Austin, Topology Seminar, 3/6/2017)
  4. Geometric Structures on Manifolds
    (UF/FSU Topology and Dynamics Meeting, University of Florida, 2/25/2017)
  5. Classification of Generalized Cusps (Slides)
    (Joint Mathematics Meetings, Special Session on Group Actions and Geometric Structures, Atlanta, GA 1/7/2017 )

Things I've Organized

  1. GEAR Junior Retreat 2017
    (Stanford University, 7/31-8/5/2017)
Palace Korea

Castle Heidelberg Little Eli


321 Love Building
1017 Academic Way
Tallahassee, FL 32306-4510
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