Express through basic quantifiers on the given domain:

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SUMMARY

The discussion focuses on expressing the concept of square-free integers within the domain of all integers (Z). A square-free integer is defined as one that is not divisible by any perfect square greater than one. The participant draws a parallel to a previous problem involving prime numbers and questions the validity of the expression "For all y in Z, y² does not divide x" in relation to the integer 1, which is square-free but divisible by 1². The conclusion emphasizes the need for a more precise formulation to accurately capture the definition of square-free integers.

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albert1992
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Homework Statement


x is square free (not divisible by a perfect square) on Z


Homework Equations


Z meaning all integers.


The Attempt at a Solution


I did a similar problem earlier that asked for the expression for prime numbers on the Natural numbers domain. For that problem the product of a*b with a,b >1 never equaled a prime number. So for this problem I believe that all of the prime numbers are included in the square free I'm just not sure how to integrate this.
 
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What's wrong with the obvious, "For all y in Z, y2 does not divide x"?
 
I think it works but what about 1

1 squared does divide the square free 1
 

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