[FOM] Eliminating AC

[Joe Shipman]

I am looking for something that I can explain in a few minutes to a mathematician who is unfamiliar with Godel constructibility, so that he will feel he understands why the result is true.

-- JS

Sent from my iPhone

On Mar 21, 2013, at 12:17 AM, Craig Smorynski <smorynski at sbcglobal.net> wrote:

The original proof by noticing that the natural numbers in V and L are the same must surely be as simple as possible, which of course is not to say that it is simple.

On Mar 20, 2013, at 7:52 PM, Joe Shipman wrote:

> What is the simplest way to see that any arithmetical consequence of ZFC is a consequence of ZF?
> 
> -- JS
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Craig



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