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| Mirrors > Home > ILE Home > Th. List > cnvsom | Unicode version | ||
| Description: The converse of a strict order relation is a strict order relation. (Contributed by Jim Kingdon, 19-Dec-2018.) |
| Ref | Expression |
|---|---|
| cnvsom |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnvpom 5328 |
. . 3
| |
| 2 | vex 2824 |
. . . . . . . . 9
| |
| 3 | vex 2824 |
. . . . . . . . 9
| |
| 4 | 2, 3 | brcnv 4961 |
. . . . . . . 8
|
| 5 | vex 2824 |
. . . . . . . . . . 11
| |
| 6 | 2, 5 | brcnv 4961 |
. . . . . . . . . 10
|
| 7 | 5, 3 | brcnv 4961 |
. . . . . . . . . 10
|
| 8 | 6, 7 | orbi12i 776 |
. . . . . . . . 9
|
| 9 | orcom 740 |
. . . . . . . . 9
| |
| 10 | 8, 9 | bitri 184 |
. . . . . . . 8
|
| 11 | 4, 10 | imbi12i 239 |
. . . . . . 7
|
| 12 | 11 | ralbii 2556 |
. . . . . 6
|
| 13 | 12 | 2ralbii 2558 |
. . . . 5
|
| 14 | ralcom 2714 |
. . . . 5
| |
| 15 | 13, 14 | bitr3i 186 |
. . . 4
|
| 16 | 15 | a1i 9 |
. . 3
|
| 17 | 1, 16 | anbi12d 477 |
. 2
|
| 18 | df-iso 4440 |
. 2
| |
| 19 | df-iso 4440 |
. 2
| |
| 20 | 17, 18, 19 | 3bitr4g 223 |
1
|
| 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-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4247 ax-pow 4309 ax-pr 4344 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3714 df-pr 3715 df-op 3717 df-br 4129 df-opab 4191 df-po 4439 df-iso 4440 df-cnv 4780 |
| This theorem is referenced by: gtso 8397 |
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