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# weak principle of induction and LNP watch

1. Hi all,

trying to prove that the weak principle of induction entails the least number principle.

Not sure how to do it. Any tips?
2. Great. Thanks.
Now just a question on how to lay out a proof. Asked to prove that if X is a subset of Y and Y is a subset of Z then X is a subset of Z..

so do I just write..x is a subset of y -> for everything, if its in x, then its in y...similarly for y, then write therefore, for everything, if its in x then its in z?

this doesnt seem much of a proof, it just seems to be rewriting the q!
3. *bump*

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