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Journals and Conferences
This paper gives a complete classification of the finite groups that contain a strongly closed p-subgroup for p any prime.
One way to understand the mod p homotopy theory of classifying spaces of finite groups is to compute their BZ/p-cellularization. In the easiest cases this is a classifying space of a finite group (always a finite p-group). If not, we show that it has infinitely many non-trivial homotopy groups. Moreover they are either p-torsion free or else infinitely many… (More)
In this note we discuss the effect of the BZ/p-nullification PBZ/p and the BZ/p-cellularization CWBZ/p over classifying spaces of finite groups, and we relate them with the corresponding functors with respect to Moore spaces that have been intensively studied in the last years. We describe PBZ/pBG by means of a covering fibration, and we classify all finite… (More)
We show that for elementary amenable groups the Hirsch length is equal to the Bredon homological dimension. This also implies that countable elementary amenable groups admit a finite-dimensional model for EG of dimension less than or equal to the Hirsch length plus one. Some remarks on groups of type FP∞ are also made. Bredon cohomology groups have been… (More)
In this paper we obtain a description of theBZ/p-cellularization (in the sense of Dror-Farjoun) of the classifying spaces of all finite groups, for all primes p.
Prototype fragrances, prepared from common fragrance components, were extracted with water, recovered, and characterized by gas chromatography before and after the water treatment, revealing a significant loss of the more water-soluble components. Unextracted prototype fragrances were also microencapsulated by a gelatin/gum arabic coacervation process. The… (More)
Let G be a discrete group for which the classifying space for proper G-actions is finite-dimensional. We find a space W such that for any such G, the classifying space BG for proper G-bundles has the homotopy type of the W -nullification of BG. We use this to deduce some results concerning BG and in some cases where there is a good model for BG we obtain… (More)
In this paper we give a complete classification of the finite groups that contain a strongly closed p-subgroup, generalizing previous work of the second author to the case of an odd prime. We use this result to also obtain a description of the BZ/p-cellularization (in the sense of Dror-Farjoun) of all the classifying spaces of finite groups.