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By using the Löwenheim–Skolem theorem & Mostowski collapse, in every model $V$ of $ZF$$ZF+Con(ZF)$ there is a countable transitive set $M$ such that $(M,\in_M) \models ZF$. Is the following "converse" true?

In every model $V$ of $ZF$ and every transitive set $M \in V$ such that $(M,\in_M) \models ZF$, there exists a transitive set $N \in V$ such that:

  1. $M \subseteq N$$M \in N$

  2. $(N,\in_N) \models ZF$

  3. $M$ is countable inside $N$

By using the Löwenheim–Skolem theorem & Mostowski collapse, in every model $V$ of $ZF$ there is a countable transitive set $M$ such that $(M,\in_M) \models ZF$. Is the following "converse" true?

In every model $V$ of $ZF$ and every transitive set $M \in V$ such that $(M,\in_M) \models ZF$, there exists a transitive set $N \in V$ such that:

  1. $M \subseteq N$

  2. $(N,\in_N) \models ZF$

  3. $M$ is countable inside $N$

By using the Löwenheim–Skolem theorem & Mostowski collapse, in every model $V$ of $ZF+Con(ZF)$ there is a countable transitive set $M$ such that $(M,\in_M) \models ZF$. Is the following "converse" true?

In every model $V$ of $ZF$ and every transitive set $M \in V$ such that $(M,\in_M) \models ZF$, there exists a transitive set $N \in V$ such that:

  1. $M \in N$

  2. $(N,\in_N) \models ZF$

  3. $M$ is countable inside $N$

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Reverse Skolem's paradox

By using the Löwenheim–Skolem theorem & Mostowski collapse, in every model $V$ of $ZF$ there is a countable transitive set $M$ such that $(M,\in_M) \models ZF$. Is the following "converse" true?

In every model $V$ of $ZF$ and every transitive set $M \in V$ such that $(M,\in_M) \models ZF$, there exists a transitive set $N \in V$ such that:

  1. $M \subseteq N$

  2. $(N,\in_N) \models ZF$

  3. $M$ is countable inside $N$