| 
|  Prof. Martin Speight |  | 
| E-mail: | j.m.speight"in"leeds.ac.uk, where "in" is replaced by the usual symbol |  
| Telephone: | (0113) 343 5169 |  | Office: | 9.11 |  
| Postal address: | School of Mathematics, University of Leeds, 
Leeds LS2 9JT, UK. |  
| Department: | Pure Mathematics |  
| Research Group: | Geometry and Analysis |  |  |  |