{ "id": "1410.2343", "version": "v1", "published": "2014-10-09T03:11:12.000Z", "updated": "2014-10-09T03:11:12.000Z", "title": "On Tate conjecture for the special fibers of some unitary Shimura varieties", "authors": [ "David Helm", "Yichao Tian", "Liang Xiao" ], "categories": [ "math.NT" ], "abstract": "Let $F$ be a totally real field in which a fixed prime $p$ is inert, and let $E$ be a CM extension of $F$ in which $p$ splits. We fix two positive integers $r,s \\in \\mathbb N$. We investigate the Tate conjecture on the special fiber of $G(U(r,s) \\times U(s,r))$-Shimura variety. We construct cycles which we conjecture to generate the Tate classes and verify our conjecture in the case of $G(U(1,s) \\times U(s,1))$. We also discuss the general conjecture regarding special cycles on the special fibers of unitary Shimura varieties.", "revisions": [ { "version": "v1", "updated": "2014-10-09T03:11:12.000Z" } ], "analyses": { "subjects": [ "11G18", "14G35", "14C25" ], "keywords": [ "shimura variety", "unitary shimura varieties", "special fiber", "tate conjecture", "general conjecture regarding special cycles" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2014arXiv1410.2343H" } } }