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Mirrors > Home > ILE Home > Th. List > cnvcnvsn | Unicode version |
Description: Double converse of a
singleton of an ordered pair. (Unlike cnvsn 5149,
this does not need any sethood assumptions on ![]() ![]() |
Ref | Expression |
---|---|
cnvcnvsn |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | relcnv 5044 |
. 2
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2 | relcnv 5044 |
. 2
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3 | vex 2763 |
. . . 4
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4 | vex 2763 |
. . . 4
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5 | 3, 4 | opelcnv 4845 |
. . 3
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6 | ancom 266 |
. . . . . 6
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
7 | 3, 4 | opth 4267 |
. . . . . 6
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8 | 4, 3 | opth 4267 |
. . . . . 6
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9 | 6, 7, 8 | 3bitr4i 212 |
. . . . 5
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10 | 3, 4 | opex 4259 |
. . . . . 6
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11 | 10 | elsn 3635 |
. . . . 5
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12 | 4, 3 | opex 4259 |
. . . . . 6
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13 | 12 | elsn 3635 |
. . . . 5
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14 | 9, 11, 13 | 3bitr4i 212 |
. . . 4
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15 | 4, 3 | opelcnv 4845 |
. . . 4
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16 | 3, 4 | opelcnv 4845 |
. . . 4
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17 | 14, 15, 16 | 3bitr4i 212 |
. . 3
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18 | 5, 17 | bitri 184 |
. 2
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19 | 1, 2, 18 | eqrelriiv 4754 |
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-14 2167 ax-ext 2175 ax-sep 4148 ax-pow 4204 ax-pr 4239 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-v 2762 df-un 3158 df-in 3160 df-ss 3167 df-pw 3604 df-sn 3625 df-pr 3626 df-op 3628 df-br 4031 df-opab 4092 df-xp 4666 df-rel 4667 df-cnv 4668 |
This theorem is referenced by: rnsnopg 5145 cnvsn 5149 |
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