Recent Preprints and Publications
Some aspects of efficiency, in Groups-Korea 1998 (ed. Y. G. Baik, D. L. Johnson, A. C. Kim), deGruyter 2000.
A remark on the polyhedrality theorem for the sigma invariants of modules over abelian groups, with R. Bieri, Proc. Cambridge Phil. Soc. 131 (2001), no. 1, 39-43.
The FP-3 conjecture for metabelian groups, with R. Bieri, J. London Math. Soc. (2) 64 (2001), 595-610.
Building resolutions, with D. H. Kochloukova, Journal of Algebra 269 (2003), 632-651.
On the Sigma(3)-conjecture for metabelian groups, with D. H. Kochloukova, J. of the London Math. Soc. (3) 67 (2003), 609-625.
Generalized knot complements and some aspherical ribbon disc complements, with S. Rosebrock, Journal of Knot Theory and its Ramifications, Vol. 12, No. 7 (2003) 947-962.
The Sigma(2)-conjecture for metabelian groups: the general case, with D. H. Kochloukova, J. Algebra 273 (2004), no. 2, 435-454.
Improving tameness for metabelian groups, with W. A. Bogley, New York J. Math. 10 (2004), 1-8.
On the homotopy type of CW complexes with aspherical fundamental group, with J. Jensen, Topology and its Applications, Vol. 153, Issue 15 (2006), 3000-3006.
Exotic presentations and homotopy types for certain 1-relator groups, with J. Jensen, Algebraic & Geometric Topology 6 (2006), 2163–2173.
On distinguishing virtual knot groups from knot groups, with S. Rosebrock, Journal of Knot Theory and Its Ramifications, Vol. 19, No. 5 (2010), 695-704.
On the K-theory and homotopy theory of the Klein bottle group, with A. Misseldine, Homology, Homotopy and Applications, vol. 12(2) (2010), 1-10.
On primeness of labeled oriented trees, with S. Rosebrock, Journal of Knot Theory and its Ramifications, Vol. 21, No. 8 (2012), pp.
Hyperbolic alternating virtual links, Groups Geom. Dyn. 6 (2012), pp.
On the Dehn complex of a virtual link, with R. Byrd, submitted (2012).
Injective labeled oriented trees are aspherical, with S. Rosebrock, submitted (2012).
Complete list of publications
Projects and contributions
The International Seminar on Low-Dimensional Homotopy and Combinatorial Group Theory, July 12-21 2009, Joseph, OR