Implications

This non-implication, Form 73 \( \not \Rightarrow \) Form 426, whose code is 6, is constructed around a proven non-implication as follows:
Note: This non-implication is actually a code 4, as this non-implication satisfies the transferability criterion. Click Transfer details for all the details)

  • An (optional) implication of code 1 or code 2 is given. In this case, it's Code 2: 7590, whose string of implications is:
    380 \(\Rightarrow\) 132 \(\Rightarrow\) 73
  • A proven non-implication whose code is 5. In this case, it's Code 3: 741, Form 380 \( \not \Rightarrow \) Form 128 whose summary information is:
    Hypothesis Statement
    Form 380 <p> \(PC(\infty,WO,\infty)\):  For every infinite family of non-empty well orderable sets, there is an infinite subfamily \(Y\) of \(X\) which has a choice function. </p>

    Conclusion Statement
    Form 128 <p> <strong>Aczel's Realization Principle:</strong> On every infinite set there is a Hausdorff topology with an infinite set of non-isolated points. </p>

  • An (optional) implication of code 1 or code 2 is given. In this case, it's Code 2: 447, whose string of implications is:
    426 \(\Rightarrow\) 8 \(\Rightarrow\) 9 \(\Rightarrow\) 128

The conclusion Form 73 \( \not \Rightarrow \) Form 426 then follows.

Finally, the
List of models where hypothesis is true and the conclusion is false:

Name Statement
\(\cal N1\) The Basic Fraenkel Model The set of atoms, \(A\) is denumerable; \(\cal G\) is the group of all permutations on \(A\); and \(S\) isthe set of all finite subsets of \(A\)

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