selected scholarly activity
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academic article
- Topological 4-manifolds with right-angled Artin fundamental groups. Journal of Topology and Analysis. 11:777-821. 2019
- Two remarks on Wall's D2 problem. Mathematical Proceedings of the Cambridge Philosophical Society. 167:361-368. 2019
- Orientable $4$-dimensional Poincaré complexes have reducible Spivak fibrations. Proceedings of the American Mathematical Society. 147:3177-3179. 2019
- FREE FINITE GROUP ACTIONS ON RATIONAL HOMOLOGY 3-SPHERES. Forum of Mathematics, Sigma. 7. 2019
- Group actions on spheres with rank one prime power isotropy. Mathematical Research Letters. 24:379-400. 2017
- Cyclic group actions on contractible 4–manifolds. Geometry and Topology. 20:1127-1155. 2016
- Group actions on spheres with rank one isotropy. Transactions of the American Mathematical Society. 368:5951-5977. 2015
- Finite group actions on Kervaire manifolds. Advances in Mathematics. 283:88-129. 2015
- Recognizing products of surfaces and simply connected $4$-manifolds. Proceedings of the American Mathematical Society. 143:2253-2262. 2014
- Homotopy representations over the orbit category. Homology, Homotopy and Applications. 16:345-369. 2014
- More examples of discrete co-compact group actions. ALGEBRAIC TOPOLOGY: APPLICATIONS AND NEW DIRECTIONS. 620:133-143. 2014
- ON CERTAIN 5-MANIFOLDS WITH FUNDAMENTAL GROUP OF ORDER 2. Quarterly Journal of Mathematics. 64:149-175. 2013
- Equivariant CW-complexes and the orbit category. Commentarii Mathematici Helvetici. 88:369-425. 2013
- Assembly Maps for Group Extensions in K-Theory and L-Theory With Twisted Coeffcients. Pure and Applied Mathematics Quarterly. 8:175-198. 2012
- Induction and Computation of Bass Nil Groups for Finite Groups. Pure and Applied Mathematics Quarterly. 8:199-220. 2012
- Surgery obstructions on closed manifolds and the inertia subgroup. Forum Mathematicum. 24:911-929. 2012
- Conjugation spaces and 4-manifolds. Mathematische Zeitschrift. 269:521-541. 2011
- A remark about dihedral group actions on spheres. Bulletin of the London Mathematical Society. 43:75-78. 2011
- Coarse geometry and P. A. Smith theory. Homology, Homotopy and Applications. 13:73-102. 2011
- Mackey functors and bisets. Geometriae Dedicata. 148:157-174. 2010
- Equivariant bundles and isotropy representations. Groups, Geometry, and Dynamics. 4:127-162. 2010
- Free actions of finite groups on $S^n \times S^n$. Transactions of the American Mathematical Society. 362:3289-3317. 2009
- EXAMPLES OF FREE ACTIONS ON PRODUCTS OF SPHERES. Quarterly Journal of Mathematics. 60:461-474. 2009
- TOPOLOGICAL 4-MANIFOLDS WITH GEOMETRICALLY TWO-DIMENSIONAL FUNDAMENTAL GROUPS. Journal of Topology and Analysis. 01:123-151. 2009
- Dress induction and the Burnside quotient Green ring. Algebra and Number Theory. 3:511-541. 2009
- The signature of a fibre bundle is multiplicative mod 4. Geometry and Topology. 11:251-314. 2007
- Non-smoothable Four-manifolds with Infinite Cyclic Fundamental Group. International Mathematics Research Notices International Mathematics Research Papers. 2007. 2007
- Some examples of free actions on products of spheres. Topology. 45:735-749. 2006
- Topological equivalence of linear representations for cyclic groups: II. Forum Mathematicum. 17:959-1010. 2005
- Topological equivalence of linear representations for cyclic groups: I. Annals of Mathematics. 161:61-104. 2005
- Homotopy Self-Equivalences of 4-Manifolds. Mathematische Zeitschrift. 248:147-172. 2004
- Permutations, isotropy and smooth cyclic group actions on definite 4–manifolds. Geometry and Topology. 8:475-509. 2004
- Identifying assembly maps in K - and L -theory. Mathematische Annalen. 328:27-57. 2004
- EQUIVARIANT PRINCIPAL BUNDLES OVER SPHERES AND COHOMOGENEITY ONE MANIFOLDS. Proceedings of the London Mathematical Society. 86:250-272. 2003
- Day-care management of sickle cell painful crisis in Jamaica: a model applicable elsewhere?. British Journal of Haematology. 104:93-96. 1999
- Comparison of responses evoked by mild indirect cooling and by sound in the forearm vasculature in patients with homozygous sickle cell disease and in normal subjects. Clinical Autonomic Research. 8:25-30. 1998
- Peripheral Vascular Response to Mild Indirect Cooling in Patients with Homozygous Sickle Cell (SS) Disease and the Frequency of Painful Crisis. Clinical Science. 94:111-120. 1998
- A non-extended hermitian form over ℤ[ℤ]. Manuscripta Mathematica. 93:435-442. 1997
- Smooth group actions on definite $4$ -manifolds and moduli spaces. Duke Mathematical Journal. 78:715-732. 1995
- Nonorientable 4-Manifolds with Fundamental Group of Order 2. Transactions of the American Mathematical Society. 344:649-649. 1994
- A SPECTRAL SEQUENCE IN SURGERY. Sbornik Mathematics. 77:1-9. 1994
- Cancellation, elliptic surfaces and the topology of certain four-manifolds.. Journal fur die Reine und Angewandte Mathematik. 1993:79-100. 1993
- Cancellation of hyperbolic forms and topological four-manifolds.. Journal fur die Reine und Angewandte Mathematik. 1993:21-48. 1993
- CANCELLATION OF LATTICES AND FINITE 2-COMPLEXES. Journal fur die Reine und Angewandte Mathematik. 442:91-109. 1993
- Perturbation of equivariant moduli spaces. Mathematische Annalen. 293:17-37. 1992
- Smooth structures on algebraic surfaces with finite fundamental group. Inventiones Mathematicae. 102:109-114. 1990
- Detection theorems for K-theory and L-theory. Journal of Pure and Applied Algebra. 63:247-299. 1990
- Rigidity of certain finite group actions on the complex projective plane. Commentarii Mathematici Helvetici. 64:618-638. 1989
- On the discriminants of forms with Arf invariant one.. Journal fur die Reine und Angewandte Mathematik. 1989:142-166. 1989
- On Gn(RG) for G a finite nilpotent group. Journal of Algebra. 116:466-470. 1988
- Finite group actions on P2(C). Journal of Algebra. 116:227-242. 1988
- On the classification of topological 4-manifolds with finite fundamental group. Mathematische Annalen. 280:85-104. 1988
- Surgery with Finite Fundamental Group. Proceedings of the London Mathematical Society. s3-56:349-379. 1988
- Smooth structures on algebraic surfaces with cyclic fundamental group. Inventiones Mathematicae. 91:53-59. 1988
- Round L-theory. Journal of Pure and Applied Algebra. 47:131-154. 1987
- Actions of Finite Groups on Rn+k with Fixed Set Rk. Canadian Journal of Mathematics. 38:781-860. 1986
- Local surgery obstructions and space forms. Mathematische Zeitschrift. 193:191-214. 1986
- ACYCLIC MAPS AND POINCARE SPACES. Lecture Notes in Mathematics. 1051:222-245. 1984
- AN INTRODUCTION TO MAPS BETWEEN SURGERY OBSTRUCTION GROUPS. Lecture Notes in Mathematics. 1051:49-127. 1984
- PROJECTIVE SURGERY OBSTRUCTIONS ON CLOSED MANIFOLDS. Lecture Notes in Mathematics. 967:101-131. 1982
- Balanced splittings of Semi-free actions of finite groups on homotopy spheres. Commentarii Mathematici Helvetici. 55:130-158. 1980
- The surgery obstruction groups for finite 2-groups. Inventiones Mathematicae. 61:33-52. 1980
- Poincaré Transversality for Double Covers. Canadian Journal of Mathematics. 30:1319-1330. 1978
- Splitting of hermitian forms over group rings. Inventiones Mathematicae. 45:19-33. 1978
- . Indiana University Mathematics Journal. 26:777-777. 1977
- Acyclic Chain complexes over the Orbit Category. M\"unster J. Math. 3 (2010), 145--161.
- Free Actions of Extraspecial $p$-Groups on $S^n \times S^n$
- Quotients of $S^2\times{S^2}$
- Topological spherical space forms. Handbook of Group Actions (Vol. II), ALM 32 (2014), 151-172. International Press, Beijing-Boston.
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conference paper
- Characterization of red cell antibodies in the Jamaican Cohort study of sickle cell disease. British Journal of Haematology. 172-172. 1998
- Outcome of splenectomy in homozygous sickle cell (SS) disease. British Journal of Haematology. 175-175. 1998
- Non-linear similarity revisited. Annals of Mathematics Studies. 157-174. 1995