12 citations · 40 across the 21 of their papers we have counts for
21 papers
Semidualities from products of trees
Daniel Studenmund, Kevin Wortman
Let be a global function field of characteristic , and let be a finite-index subgroup of an arithmetic group defined with respect to and such that any torsion elemen…
An infinitely generated virtual cohomology group for noncocompact arithmetic groups over function fields
Kevin Wortman
Let G be a noncocompact irreducible arithmetic group over a global function field K of characteristic p, and let H be a finite-index, residually p-finite subgroup of G. We show tha…
Horospherical limit points of S-arithmetic groups
Dave Witte Morris, Kevin Wortman
Suppose Gamma is an S-arithmetic subgroup of a connected, semisimple algebraic group G over a global field Q (of any characteristic). It is well known that Gamma acts by isometries…
Divide-and-Conquer 3D Convex Hulls on the GPU
Jeffrey M. White, Kevin A. Wortman
We describe a pure divide-and-conquer parallel algorithm for computing 3D convex hulls. We implement that algorithm on GPU hardware, and find a significant speedup over comparable…
A Durable Flash Memory Search Tree
James Clay, Kevin Wortman
We consider the task of optimizing the B-tree data structure, used extensively in operating systems and databases, for sustainable usage on multi-level flash memory. Empirical evid…
Filling boundaries of coarse manifolds in semisimple and solvable arithmetic groups
Mladen Bestvina, Alex Eskin, Kevin Wortman
We provide partial results towards a conjectural generalization of a theorem of Lubotzky-Mozes-Raghunathan for arithmetic groups (over number fields or function fields) that implie…