Statement:

Antichain Principle:  Every partially ordered set has a maximal antichain. Jech [1973b], p 133.

Howard_Rubin_Number: 89

Parameter(s): This form does not depend on parameters

This form's transferability is: Not Transferable

This form's negation transferability is: Negation Transferable

Article Citations:
Kurepa-1953: Uber das Auswahlaxiom

Book references
The Axiom of Choice, Jech, T., 1973b

Note connections:
Note 39 In this note the results of Harper/Rubin [1976] are summarized.

The following forms are listed as conclusions of this form class in rfb1: 76, 292, 53, 62, 69, 64, 67, 90, 126, 128, 146, 177, 200, 267, 254, 323, 390, 89, 278, 106, 1,

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Complete List of Equivalent Forms

Howard-Rubin Number Statement References
89 A

If \(\forall y\in X\), \(y = \langle u,R\rangle\) where \(R\) is a partial order on \(u\) then there is a function \(f\) on \(X\) such that \(\forall\langle u,R\rangle\in X\), \(f(\langle u,R\rangle)\) is a maximal antichain in \(u\).

Felgner [1969] Harper-Rubin-1976