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Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-ax12wlem | Structured version Visualization version Unicode version |
Description: A lemma used to prove a weak version of the axiom of substitution ax-12 2047. (Temporary comment: The general statement that ax12wlem 2009 proves.) (Contributed by BJ, 20-Mar-2020.) |
Ref | Expression |
---|---|
bj-ax12wlem.1 |
Ref | Expression |
---|---|
bj-ax12wlem |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bj-ax12wlem.1 | . 2 | |
2 | ax-5 1839 | . 2 | |
3 | 1, 2 | bj-ax12i 32616 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wal 1481 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 |
This theorem depends on definitions: df-bi 197 df-an 386 |
This theorem is referenced by: bj-ax12w 32665 |
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