doi:10.1007/s13163-010-0052-5engMarco Buzunariz, Miguel AngelIsotropic subspaces of Orlik-Solomon algebrasART-2011-102662We give a combinatorial characterization of isotropic subspaces in the Orlik-Solomon algebra of a hyperplane arrangement in terms of decorations of its intersection lattice. We then use this characterization to prove a result that relates these isotropic subspaces with linear systems supported on the arrangement, for arrangements with isolated non-normal crossings of a particular form.2011http://zaguan.unizar.es/record/13138710.1007/s13163-010-0052-5http://zaguan.unizar.es/record/131387oai:zaguan.unizar.es:131387Revista Matematica Complutense 24, 2 (2011), 527-538All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess