AUC Philosophica et Historica je víceoborový akademický časopis zaměřený na humanitní a společenskovědné obory (filozofie, psychologie, pedagogika, sociologie, obecné, české a hospodářské dějiny, pomocné vědy historické a archivnictví, etnologie).
Časopis je indexován v databázích CEEOL, DOAJ a EBSCO.
AUC PHILOSOPHICA ET HISTORICA, Vol 2022 No 1 (2022), 57–75
Embeddings, projections, and Easton’s lemma
Šárka Stejskalová
DOI: https://doi.org/10.14712/24647055.2025.4
zveřejněno: 28. 02. 2025
Abstract
We survey some lesser-known facts concerning properties of embeddings and projections between forcing notions. We will also state some generalizations of Easton’s lemma. To our knowledge, many of these facts have not been published, so we include their proofs for the benefit of the reader.
klíčová slova: forcing; forcing notion; dense embedding; regular embedding; complete embedding; projection; chain condition; closure
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