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Mirrors > Home > NFE Home > Th. List > r19.30 | Unicode version |
Description: Theorem 19.30 of [Margaris] p. 90 with restricted quantifiers. (Contributed by Scott Fenton, 25-Feb-2011.) |
Ref | Expression |
---|---|
r19.30 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ralim 2686 |
. 2
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2 | orcom 376 |
. . . 4
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3 | df-or 359 |
. . . 4
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4 | 2, 3 | bitri 240 |
. . 3
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5 | 4 | ralbii 2639 |
. 2
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6 | orcom 376 |
. . 3
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7 | dfrex2 2628 |
. . . 4
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8 | 7 | orbi2i 505 |
. . 3
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9 | imor 401 |
. . 3
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10 | 6, 8, 9 | 3bitr4i 268 |
. 2
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11 | 1, 5, 10 | 3imtr4i 257 |
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 1546 ax-5 1557 ax-17 1616 ax-9 1654 ax-8 1675 ax-11 1746 |
This theorem depends on definitions: df-bi 177 df-or 359 df-an 360 df-tru 1319 df-ex 1542 df-nf 1545 df-ral 2620 df-rex 2621 |
This theorem is referenced by: (None) |
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