{ "id": "1907.09353", "version": "v1", "published": "2019-07-22T14:51:08.000Z", "updated": "2019-07-22T14:51:08.000Z", "title": "Minimal Parabolic $k$-subgroups acting on Symmetric $k$-varieties Corresponding to $k$-split Groups", "authors": [ "Mark Hunnell" ], "categories": [ "math.RT" ], "abstract": "Symmetric $k$-varieties are a natural generalization of symmetric spaces to general fields $k$. We study the action of minimal parabolic $k$-subgroups on symmetric $k$-varieties and define a map that embeds these orbits within the orbits corresponding to algebraically closed fields. We develop a condition for the surjectivity of this map in the case of $k$-split groups that depends only on the dimension of a maximal $k$-split torus contained within the fixed point group of the involution defining the symmetric $k$-variety.", "revisions": [ { "version": "v1", "updated": "2019-07-22T14:51:08.000Z" } ], "analyses": { "keywords": [ "minimal parabolic", "split groups", "subgroups acting", "varieties corresponding", "general fields" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }