{"paper":{"title":"On $\\Gamma_n$-contractions and their Conditional Dilations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.FA","authors_text":"Avijit Pal","submitted_at":"2017-04-14T18:07:08Z","abstract_excerpt":"We prove some estimates for elementary symmetric polynomials on $\\mathbb D^n.$ We show that these estimates are sharp which allow us to study the properties of closed symmetrized polydisc $\\Gamma_n.$ Furthermore, we show the existence and uniqueness of solutions to the operator equations $$S_i-S_{n-i}^*S_n=D_{S_n}X_iD_{S_n}~~{\\rm{and}}~~S_{n-i}-S_{i}^*S_n=D_{S_n}X_{n-i}D_{S_n},$$ where $X_i,X_{n-i}\\in \\mathcal B(\\mathcal D_{S_n}), ~{\\rm{for ~all~}} i=1,\\ldots,(n-1),$ with numerical radius not greater than $1,$ for a $\\Gamma_n$-contraction $(S_1,\\ldots, S_n).$ We construct a conditional dilatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.04508","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}