Forty eighth meeting of the Transpennine Topology Triangle

Department of Mathematics and Computer Science
University of Leicester
February 14th 2005


Coffee and tea will be available in F9 (Mathematics Building, Reading Room) from 11.00 am.


Stefan Bauer (Bielefeld) "Monopoles and stable homotopy"
Seiberg-Witten invariants of differentiable closed 4-manifolds allow for a refinement taking values in certain equivariant cohomotopy groups. The talk will explain this construction and how it extends to 4-manifolds bounding rational homology spheres.

Le Minh Ha (Leicester) "Sub-Hopf algebras of the Steenrod algebra and the Singer transfer"
The Singer transfer is an algebraic gadget which maps into the cohomology of the Steenrod algebra. We investigate its image using sub-Hopf algebras of the Steenrod algebra and the "stratification" technique of Quillen and Palmieri. Applications to the so-called "hit" problem are also discussed.

TTT48 is partially supported by an LMS Scheme 3 grant. Please let Frank Neumann know if you will be joining us for lunch, as he needs to make specific bookings. Anyone who wishes to participate is welcome: we shall operate the usual arrangements for assistance with travel expenses.
For further information email Frank Neumann fn8 (\a\t) (or John Greenlees j.greenlees (\a\t) or Nige Ray nige (\a\t) if you are interested, so we can make approximately the right amount of tea and coffee.

How to get there

It is a short walk from the rail station. See maps and how to get to Leicester University
The meeting is partially supported by a Scheme 3 grant from the London Mathematical Society.

Escape routes

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