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Mirrors > Home > MPE Home > Th. List > ax9v | Structured version Visualization version Unicode version |
Description: Weakened version of ax-9 1913, with a dv condition on . This should be the only proof referencing ax-9 1913, and it should be referenced only by its two weakened versions ax9v1 1915 and ax9v2 1916, from which ax-9 1913 is then rederived as ax9 1917, which shows that either ax9v 1914 or the conjunction of ax9v1 1915 and ax9v2 1916 is sufficient. (Contributed by BJ, 7-Dec-2020.) Use ax9 1917 instead. (New usage is discouraged.) |
Ref | Expression |
---|---|
ax9v |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-9 1913 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 |
This theorem was proved from axioms: ax-9 1913 |
This theorem is referenced by: ax9v1 1915 ax9v2 1916 |
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