{ "id": "0910.0533", "version": "v1", "published": "2009-10-03T10:19:10.000Z", "updated": "2009-10-03T10:19:10.000Z", "title": "Block-Transitive Designs in Affine Spaces", "authors": [ "Michael Huber" ], "comment": "10 pages; to appear in: \"Designs, Codes and Cryptography\"", "categories": [ "math.CO", "math.GR" ], "abstract": "This paper deals with block-transitive $t$-$(v,k,\\lambda)$ designs in affine spaces for large $t$, with a focus on the important index $\\lambda=1$ case. We prove that there are no non-trivial 5-$(v,k,1)$ designs admitting a block-transitive group of automorphisms that is of affine type. Moreover, we show that the corresponding non-existence result holds for 4-$(v,k,1)$ designs, except possibly when the group is one-dimensional affine. Our approach involves a consideration of the finite 2-homogeneous affine permutation groups.", "revisions": [ { "version": "v1", "updated": "2009-10-03T10:19:10.000Z" } ], "analyses": { "keywords": [ "affine spaces", "block-transitive designs", "affine permutation groups", "corresponding non-existence result holds", "important index" ], "note": { "typesetting": "TeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2009arXiv0910.0533H" } } }