Ignat Soroko

Department of Mathematics
Florida State University
Tallahassee, FL 32306-4510

Office: 405B Carothers Hall (MCH)
Email: isoroko@fsu.edu

I am a Dean's Post-Doctoral Scholar in the Department of Mathematics at Florida State University. I received my Ph.D. from the University of Oklahoma in May 2018 under the supervision of Noel Brady. After that I was a postdoc at Louisiana State University under the mentorship of Pallavi Dani.

Research interests:

Geometric group theory and low-dimensional topology, with emphasis on Artin groups, Coxeter groups, free-by-cyclic groups, quasi-isometric invariants, Dehn functions of groups, and stable commutator length. I also have an ongoing interest in `Hanna Neumann' type of questions, mapping class groups, profinite groups, and criteria for linearity.


Recent teaching evaluations: Fall 2021 (FSU), Spring 2021 (LSU, online), Fall 2019 (LSU)
Provost Certificate of Distinction in Teaching (OU, 2014)


Published papers and preprints:

  1. Property R for some spherical and affine Artin-Tits groups. (with M. Calvez) pdf, arXiv,

  2. Homological Dehn functions of groups of type FP2. (with N. Brady and R. Kropholler) pdf, arXiv, video,

  3. Artin groups of types F4 and H4 are not commensurable with that of type D4. Topology and its Applications 300 (2021), 107770,

    pdf, arXiv, journal, slides,

  4. Linearity of some low-complexity mapping class groups. Forum Mathematicum 32 (2020), no. 2, 279-286.

    pdf, arXiv, journal, MathReviews, zbMATH,

    A (longer) earlier version with an alternative computation "from first principles": pdf.

  5. Realizable ranks of joins and intersections of subgroups in free groups. International Journal of Algebra and Computation

    30 (2020), no. 3, 625-666. pdf, arXiv, journal, MathReviews, slides, video,

  6. Uncountably many quasi-isometry classes of groups of type FP. (with R. Kropholler and I. Leary) American Journal of

    Mathematics 142, 6 (2020), 1931-1944. arXiv, journal, MathReviews, slides,

  7. Genus bounds in right-angled Artin groups. (with M. Forester and J. Tao) Publicacions Matemàtiques 64 (2020), no. 1, 233-253.

    pdf, arXiv, journal, MathReviews, zbMATH, slides, questions,

  8. Dehn functions of subgroups of right-angled Artin groups. (with N. Brady) Geometriae Dedicata 200 (2019), 197-239.

    pdf, arXiv (old version), journal, MathReviews, questions,

Other texts:


All materials related to teaching are on Canvas and WebAssign.
Past teaching at LSU:


My wife Hayat Hokayem is an Associate Professor in the College of Education at Texas Christian University, Fort Worth, TX.
Our son Vikenty (born in 2014): 1, 2, 3, 4, 5, 6, 7.
Our son Nikolai (born in 2017): 1, 2, 3, 4, 5, 6, 7.
Vikenty and Nikolai together: 1.

This page was last updated on Friday, December 17, 2021.