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Mirrors > Home > MPE Home > Th. List > hbal | Structured version Visualization version Unicode version |
Description: If is not free in , it is not free in . (Contributed by NM, 12-Mar-1993.) |
Ref | Expression |
---|---|
hbal.1 |
Ref | Expression |
---|---|
hbal |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hbal.1 | . . 3 | |
2 | 1 | alimi 1739 | . 2 |
3 | ax-11 2034 | . 2 | |
4 | 2, 3 | syl 17 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wal 1481 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-gen 1722 ax-4 1737 ax-11 2034 |
This theorem is referenced by: hbexOLD 2152 nfal 2153 cbvalv 2273 hbral 2943 wl-nfalv 33312 |
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