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Mirrors > Home > ILE Home > Th. List > hbsb2a | Unicode version |
Description: Special case of a bound-variable hypothesis builder for substitution. (Contributed by NM, 2-Feb-2007.) |
Ref | Expression |
---|---|
hbsb2a |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sb4a 1679 |
. 2
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2 | sb2 1647 |
. . 3
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3 | 2 | a5i 1432 |
. 2
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4 | 1, 3 | syl 14 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-5 1333 ax-gen 1335 ax-ie1 1379 ax-ie2 1380 ax-11 1394 ax-4 1397 ax-i9 1420 ax-ial 1424 |
This theorem depends on definitions: df-bi 110 df-sb 1643 |
This theorem is referenced by: hbsb3 1686 |
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