Implications

This non-implication, Form 48-K \( \not \Rightarrow \) Form 378, 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: 7449, whose string of implications is:
    121 \(\Rightarrow\) 120-K \(\Rightarrow\) 48-K
  • A proven non-implication whose code is 3. In this case, it's Code 3: 1049, Form 121 \( \not \Rightarrow \) Form 132 whose summary information is:
    Hypothesis Statement
    Form 121 <p> \(C(LO,<\aleph_{0})\): Every linearly ordered set of non-empty finite sets has a choice function. </p>

    Conclusion Statement
    Form 132 <p> \(PC(\infty, <\aleph_0,\infty)\):  Every infinite family of finite  sets has an infinite subfamily with a choice function. </p>

  • An (optional) implication of code 1 or code 2 is given. In this case, it's Code 2: 9652, whose string of implications is:
    378 \(\Rightarrow\) 132

The conclusion Form 48-K \( \not \Rightarrow \) Form 378 then follows.

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

Name Statement
\(\cal N24\) Hickman's Model I This model is a variation of \(\cal N2\)

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