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Josia Pietsch 2024-02-01 17:56:53 +01:00
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\lecture{19}{2024-01-11}{Forcing} \lecture{19}{2024-01-11}{Forcing}
Beginning with this lecture,
the material is no longer relevant for the exam.
Recall that $\exists x \in y.~ \phi$ abbreviates Recall that $\exists x \in y.~ \phi$ abbreviates
$\exists x.~ x \in y \land \phi$ $\exists x.~ x \in y \land \phi$
and $\forall x \in y.~\phi$ abbreviates $\forall x.~x \in y \to \phi$. and $\forall x \in y.~\phi$ abbreviates $\forall x.~x \in y \to \phi$.