{ "id": "2205.10709", "version": "v1", "published": "2022-05-22T02:19:54.000Z", "updated": "2022-05-22T02:19:54.000Z", "title": "On the sequence $\\langle \\text{pcf}^α(A): α\\in \\text{Ord} \\rangle$", "authors": [ "Mohammad Golshani" ], "categories": [ "math.LO" ], "abstract": "Modulo the existence of large cardinals, there is a model of set theory in which for some set $A$ of regular cardinals, the sequence $\\langle \\text{pcf}^\\alpha(A): \\alpha \\in \\text{Ord} \\rangle$ is strictly increasing. The result answers a problem from [5].", "revisions": [ { "version": "v1", "updated": "2022-05-22T02:19:54.000Z" } ], "analyses": { "keywords": [ "set theory", "result answers", "regular cardinals", "large cardinals" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }