Implications

This non-implication, Form 421 \( \not \Rightarrow \) Form 15, whose code is 4, is constructed around a proven non-implication as follows:

  • An (optional) implication of code 1 or code 2 is given. In this case, it's Code 2: 4224, whose string of implications is:
    60 \(\Rightarrow\) 231 \(\Rightarrow\) 421
  • A proven non-implication whose code is 3. In this case, it's Code 3: 1254, Form 60 \( \not \Rightarrow \) Form 296 whose summary information is:
    Hypothesis Statement
    Form 60 <p> \(C(\infty,WO)\): Every set of non-empty, well orderable sets has a choice function.<br /> <a href="/books/2">Moore, G. [1982]</a>, p 125. </p>

    Conclusion Statement
    Form 296 <p> <strong>Part-\(\infty\):</strong> Every infinite set is the disjoint union of infinitely many infinite sets. </p>

  • An (optional) implication of code 1 or code 2 is given. In this case, it's Code 2: 9862, whose string of implications is:
    15 \(\Rightarrow\) 296

The conclusion Form 421 \( \not \Rightarrow \) Form 15 then follows.

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

Name Statement
\(\cal N3\) Mostowski's Linearly Ordered Model \(A\) is countably infinite;\(\precsim\) is a dense linear ordering on \(A\) without first or lastelements (\((A,\precsim) \cong (\Bbb Q,\le)\)); \(\cal G\) is the group of allorder automorphisms on \((A,\precsim)\); and \(S\) is the set of all finitesubsets of \(A\)
\(\cal N48\) Pincus' Model XI \(\cal A=(A,<,C_0,C_1,\dots)\) is called an<em>ordered colored set</em> (OC set) if \(<\) is a linear ordering on \(A\)and the \(C_i\), for \(i\in\omega\) are subsets of \(A\) such that for each\(a\in A\) there is exactly one \(n\in\omega\) such that \(a\in C_n\)

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