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Mirrors > Home > ILE Home > Th. List > hbmo1 | Unicode version |
Description: Bound-variable hypothesis builder for "at most one." (Contributed by NM, 8-Mar-1995.) |
Ref | Expression |
---|---|
hbmo1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-mo 1904 |
. 2
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2 | hbe1 1384 |
. . 3
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3 | hbeu1 1910 |
. . 3
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4 | 2, 3 | hbim 1437 |
. 2
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5 | 1, 4 | hbxfrbi 1361 |
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 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-4 1400 ax-ial 1427 ax-i5r 1428 |
This theorem depends on definitions: df-bi 110 df-eu 1903 df-mo 1904 |
This theorem is referenced by: mopick2 1983 moexexdc 1984 |
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