If we wish to convert a statement of the form $\exists x \in A ~:~ P(x)$ into the form of an implication, would the correct conversion be
$$\exists x ~:~ x \in A \implies P(x)$$
Thanks
If we wish to convert a statement of the form $\exists x \in A ~:~ P(x)$ into the form of an implication, would the correct conversion be
$$\exists x ~:~ x \in A \implies P(x)$$
Thanks
Copyright © 2021 JogjaFile Inc.
NO.
$(∃x ∈ A)P(x)$ is the abbreviation for: $∃x \ (x∈A ∧ P(x))$ and this one is not equivalent to $∃x \ (x∈A \to P(x))$.
$∃x \ (x∈A ∧ P(x))$ is false if there are no elements in $A$ (i.e. when $A$ is empty) while in this case $∃x \ (x∈A \to P(x))$ is true.