1,477 research outputs found
The cohomology of exotic 2-local finite groups
There exist spaces BSol(q) which are the classifying spaces of a family of
2-local finite groups based on certain fusion system over the Sylow 2-subgroups
of Spin_7(q). In this paper we calculate the cohomology of BSol(q) as an
algebra over the Steenrod algebra A_2. We also provide the calculation of the
cohomology algebra over A_2 of the finite group of Lie type G_2(q).Comment: 13 page
The homotopy type of the complement of a coordinate subspace arrangement
The homotopy type of the complement of a complex coordinate subspace
arrangement is studied by fathoming out the connection between its topological
and combinatorial structures. A family of arrangements for which the complement
is homotopy equivalent to a wedge of spheres is described. One consequence is
an application in commutative algebra: certain local rings are proved to be
Golod, that is, all Massey products in their homology vanish.Comment: 42 page
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