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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 1901 |
. 2
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2 | hbe1 1381 |
. . 3
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3 | hbeu1 1907 |
. . 3
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4 | 2, 3 | hbim 1434 |
. 2
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5 | 1, 4 | hbxfrbi 1358 |
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-7 1334 ax-gen 1335 ax-ie1 1379 ax-ie2 1380 ax-4 1397 ax-ial 1424 ax-i5r 1425 |
This theorem depends on definitions: df-bi 110 df-eu 1900 df-mo 1901 |
This theorem is referenced by: mopick2 1980 moexexdc 1981 |
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