{ "id": "1804.05304", "version": "v1", "published": "2018-04-15T04:38:51.000Z", "updated": "2018-04-15T04:38:51.000Z", "title": "Length and Depth", "authors": [ "Shimon Garti", "Saharon Shelah" ], "categories": [ "math.LO" ], "abstract": "We construct, in ZFC, a sequence of Boolean algebras for which the product of Lengths is strictly smaller than the Depth of the product algebra. This gives a positive answer to Problem 30 from Monk's book \"Cardinal invariants on Boolean algebras\".", "revisions": [ { "version": "v1", "updated": "2018-04-15T04:38:51.000Z" } ], "analyses": { "subjects": [ "06E05" ], "keywords": [ "boolean algebras", "product algebra", "cardinal invariants", "monks book", "positive answer" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }