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Mirrors > Home > MPE Home > Th. List > r19.30 | Structured version Visualization version Unicode version |
Description: Restricted quantifier version of 19.30 1809. (Contributed by Scott Fenton, 25-Feb-2011.) |
Ref | Expression |
---|---|
r19.30 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ralim 2948 |
. 2
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2 | orcom 402 |
. . . 4
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3 | df-or 385 |
. . . 4
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4 | 2, 3 | bitri 264 |
. . 3
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5 | 4 | ralbii 2980 |
. 2
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6 | orcom 402 |
. . 3
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7 | dfrex2 2996 |
. . . 4
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8 | 7 | orbi2i 541 |
. . 3
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9 | imor 428 |
. . 3
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10 | 6, 8, 9 | 3bitr4i 292 |
. 2
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11 | 1, 5, 10 | 3imtr4i 281 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-ex 1705 df-ral 2917 df-rex 2918 |
This theorem is referenced by: disjunsn 29407 esumcvg 30148 |
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