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Life in the Sacks model. (English) Zbl 0999.03044
Summary: This note contains results which everybody knows are true but the proofs of which are not to be found in the literature. In particular, we prove that certain cardinal invariants of the continuum are small in the Sacks model and provide a proof of a theorem of J. Baumgartner stating that $$\clubsuit$$ holds in the side-by-side Sacks model.

##### MSC:
 3e+17 Cardinal characteristics of the continuum 3e+40 Other aspects of forcing and Boolean-valued models
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