# Sh:504

• Koppelberg, S., & Shelah, S. (1996). Subalgebras of Cohen algebras need not be Cohen. In Logic: from foundations to applications (Staffordshire, 1993), Oxford Univ. Press, New York, pp. 261–275.
• Abstract:
We give an example of a regular and complete subalgebra of a Cohen algebra which is not Cohen.
Bib entry
@incollection{Sh:504,
author = {Koppelberg, Sabine and Shelah, Saharon},
title = {{Subalgebras of Cohen algebras need not be Cohen}},
booktitle = {{Logic: from foundations to applications (Staffordshire, 1993)}},
series = {Oxford Sci. Publ.},
year = {1996},
pages = {261--275},
publisher = {Oxford Univ. Press, New York},
mrnumber = {1428008},
mrclass = {03E40},
note = {\href{https://arxiv.org/abs/math/9610227}{arXiv: math/9610227}},
arxiv_number = {math/9610227}
}