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| Description: The converse of a binary relation swaps arguments. Theorem 11 of [Suppes] p. 61. |
| Ref | Expression |
|---|---|
| opelcnv.1 |
|
| opelcnv.2 |
|
| Ref | Expression |
|---|---|
| brcnv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opelcnv.1 |
. 2
| |
| 2 | opelcnv.2 |
. 2
| |
| 3 | brcnvg 3286 |
. 2
| |
| 4 | 1, 2, 3 | mp2an 695 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: cnvco 3289 dfrn2 3292 dfdm4 3294 brelrn 3332 eliniseg 3413 intasym 3422 asymref 3423 asymrefOLD 3425 cnvi 3433 dminss 3448 imainss 3449 dminxp 3469 cnvpo 3508 cnvso 3509 dffun2 3512 funcnv2 3542 fun2cnv 3545 imadif 3560 f11 3649 ecid 4284 dfinfmr 6014 infmsup 6015 infmxrcl 6033 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-pr 2769 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-br 2610 df-opab 2657 df-cnv 3176 |