Implications

This non-implication, Form 19 \( \not \Rightarrow \) Form 210, 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: 6140, whose string of implications is:
    91 \(\Rightarrow\) 79 \(\Rightarrow\) 94 \(\Rightarrow\) 34 \(\Rightarrow\) 19
  • A proven non-implication whose code is 5. In this case, it's Code 3: 215, Form 91 \( \not \Rightarrow \) Form 210 whose summary information is:
    Hypothesis Statement
    Form 91 <p> \(PW\):  The power set of a well ordered set can be well ordered. </p>

    Conclusion Statement
    Form 210 <p> The commutator subgroup of a free group is free. </p>

  • This non-implication was constructed without the use of this last code 2/1 implication

The conclusion Form 19 \( \not \Rightarrow \) Form 210 then follows.

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

Name Statement
\(\cal N30\) L&auml;uchli's Model III The set \(A\) is denumerable; \(\cal G\) isthe group generated by the set of transpositions on \(A\); and \(S\) is theset of all finite subsets of \(A\)

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