Kevin Wortman

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Department of Mathematics University of Utah 155 South 1400 East, Room 233 Salt Lake City, UT 84112-0090

email: wortman@math.utah.edu Office: 325 JWB Phone: (801) 585-1628 Fax: (801) 581-4148

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• Semidualities from products of trees
  (with D. Studenmund) ; Accepted; Geom. Topol.
• An Infinitely generated virtual cohomology group for noncocompact arithmetic groups over function fields
  Groups Geom. Dyn. 10 (2016), 91-115.
• Horospherical limit points of S-arithmetic groups
  (with D. Morris) ; New York J. Math. 20 (2014), 367-376.
• Filling boundaries of coarse manifolds in semisimple and solvable arithmetic groups
  (with M. Bestvina and A. Eskin) ; J. Eur. Math. Soc. 15 (2013) 2165-2195.
• On presentations of integer polynomial points of simple groups over number fields
  (with A. Mohammadi); Geom. Dedicata. 164 (2011), 131-137.
• Quasi-isometries of irreducible postive-rank arithmetic groups over function fields
  In appendix to ``A Joining classification and a special case of Raghunathan's conjecture in positive characteristic.''
  by M. Einsiedler & A. Mohammadi; J. Anal. Math. 116 (2012), 299-334.
• Connectivity properties of horospheres in Euclidean buildings and applications to finiteness properties of discrete groups
  (with K.U. Bux); Invent. Math. 185 (2011), 395-419.
• Infinite generation of non-cocompact lattices on right-angled buildings
  (with A. Thomas) Algebr. Geom. Topol. 11 (2011), 929-938.
• Exponential higher dimensional isoperimetric inequalities for some arithmetic groups
  Geom. Dedicata. 151 (2011), 141-153.
• Quasi-isometries of rank one S-arithmetic lattices
  Groups Geom. Dyn. 5 (2011), 787-803.
• SL(n,Z[t]) is not FP_n-1
  (with K.U. Bux, A. Mohammadi); Comment. Math. Helv. 85 (2010), 151-164.
• On Unipotent flows in H(1,1)
  (with K. Calta); Ergodic Theory Dynam. Systems 30 (2010), 121-140.
• A Finitely-presented solvable group with a small quasi-isometry group
  Michigan Math. J. 55 (2007), 3-24.
• Finiteness properties of arithmetic groups over function fields
  (with Kai-Uwe Bux); Invent. Math. 167 (2007), 355-378.
• Quasi-isometric rigidity of higher rank S-arithmetic lattices
  Geom. Topol. 11 (2007), 995-1048.
• A Geometric proof that SL(2,Z[t,1/t]) is not finitely presented
  (with Kai-Uwe Bux); Algebr. Geom. Topol. 6 (2006), 839-852.
• Quasiflats with holes in reductive groups
  Algebr. Geom. Topol. 6 (2006), 91-117.

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Math 6510

Math 1050

Math 1060