Provable Pi-1-2 Singletons
英文摘要:
In this note I show that a pi-1-2 singleton R of L-degree strictly between 0 and 0# can be obtained so as to be the unique solution to a pi-1-2 formula which provably has at most one solution, in the theory ZFC+(*) where (*) has the approximate strength of an ineffable cardinal.
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。