Stabilizers of closed sets in the Urysohn space
英文摘要：
Answering a question of Gao and Kechris, we show that, given any polish group G, there exists a closed subset F of Urysohn's universal metric space U such that G is (topologically) isomorphic to the subgroup of isometries of U which map F onto itself.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
