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Mirrors > Home > ILE Home > Th. List > ssrel | Unicode version |
Description: A subclass relationship depends only on a relation's ordered pairs. Theorem 3.2(i) of [Monk1] p. 33. (Contributed by NM, 2-Aug-1994.) (Proof shortened by Andrew Salmon, 27-Aug-2011.) |
Ref | Expression |
---|---|
ssrel |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssel 3151 |
. . 3
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2 | 1 | alrimivv 1875 |
. 2
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3 | eleq1 2240 |
. . . . . . . . . . 11
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4 | eleq1 2240 |
. . . . . . . . . . 11
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5 | 3, 4 | imbi12d 234 |
. . . . . . . . . 10
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6 | 5 | biimprcd 160 |
. . . . . . . . 9
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7 | 6 | 2alimi 1456 |
. . . . . . . 8
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8 | 19.23vv 1884 |
. . . . . . . 8
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9 | 7, 8 | sylib 122 |
. . . . . . 7
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10 | 9 | com23 78 |
. . . . . 6
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11 | 10 | a2d 26 |
. . . . 5
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12 | 11 | alimdv 1879 |
. . . 4
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13 | df-rel 4635 |
. . . . 5
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14 | dfss2 3146 |
. . . . 5
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15 | elvv 4690 |
. . . . . . 7
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
16 | 15 | imbi2i 226 |
. . . . . 6
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17 | 16 | albii 1470 |
. . . . 5
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18 | 13, 14, 17 | 3bitri 206 |
. . . 4
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19 | dfss2 3146 |
. . . 4
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20 | 12, 18, 19 | 3imtr4g 205 |
. . 3
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21 | 20 | com12 30 |
. 2
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22 | 2, 21 | impbid2 143 |
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 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-14 2151 ax-ext 2159 ax-sep 4123 ax-pow 4176 ax-pr 4211 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-v 2741 df-un 3135 df-in 3137 df-ss 3144 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-opab 4067 df-xp 4634 df-rel 4635 |
This theorem is referenced by: eqrel 4717 relssi 4719 relssdv 4720 cotr 5012 cnvsym 5014 intasym 5015 intirr 5017 codir 5019 qfto 5020 |
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