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Mirrors > Home > ILE Home > Th. List > ssoprab2 | Unicode version |
Description: Equivalence of ordered pair abstraction subclass and implication. Compare ssopab2 4290. (Contributed by FL, 6-Nov-2013.) (Proof shortened by Mario Carneiro, 11-Dec-2016.) |
Ref | Expression |
---|---|
ssoprab2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 19 |
. . . . . . . . . 10
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2 | 1 | anim2d 337 |
. . . . . . . . 9
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3 | 2 | alimi 1466 |
. . . . . . . 8
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4 | exim 1610 |
. . . . . . . 8
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5 | 3, 4 | syl 14 |
. . . . . . 7
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6 | 5 | alimi 1466 |
. . . . . 6
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7 | exim 1610 |
. . . . . 6
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8 | 6, 7 | syl 14 |
. . . . 5
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9 | 8 | alimi 1466 |
. . . 4
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10 | exim 1610 |
. . . 4
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11 | 9, 10 | syl 14 |
. . 3
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12 | 11 | ss2abdv 3243 |
. 2
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13 | df-oprab 5895 |
. 2
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14 | df-oprab 5895 |
. 2
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15 | 12, 13, 14 | 3sstr4g 3213 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2171 |
This theorem depends on definitions: df-bi 117 df-nf 1472 df-sb 1774 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-in 3150 df-ss 3157 df-oprab 5895 |
This theorem is referenced by: ssoprab2b 5948 |
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