Axiom Of Choice

We have the following indirect implication of form equivalence classes:

60 \(\Rightarrow\) 308-p given by the following sequence of implications, with a reference to its direct proof:

Implication	Reference
60 \(\Rightarrow\) 62	clear
62 \(\Rightarrow\) 308-p	Maximal p-subgroups and the axiom of choice, Howard-Yorke-1987 [1987, Notre Dame J. Formal Logic

Here are the links and statements of the form equivalence classes referenced above:

Howard-Rubin Number	Statement
60:	\(C(\infty,WO)\): Every set of non-empty, well orderable sets has a choice function. Moore, G. [1982], p 125.
62:	\(C(\infty,< \aleph_{0})\): Every set of non-empty finite sets has a choice function.
308-p:	If \(p\) is a prime and if \(\{G_y: y\in Y\}\) is a set of finite groups, then the weak direct product \(\prod_{y\in Y}G_y\) has a maximal \(p\)-subgroup.

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