### Was Sierpi\'nski right? III Can continuum--c.c. times c.c.c. be continuum--c.c.?

by Shelah. [Sh:481]

Annals Pure and Applied Logic, 1996

We prove the consistency of: if B_1, B_2 are Boolean
algebra satisfying the c.c.c. and the 2^{aleph_0}-c.c.
respectively then B_1 x B_2 satisfies the
2^{aleph_0}-c.c.

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