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Mirrors > Home > ILE Home > Th. List > cnven | Unicode version |
Description: A relational set is equinumerous to its converse. (Contributed by Mario Carneiro, 28-Dec-2014.) |
Ref | Expression |
---|---|
cnven |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpr 109 | . 2 | |
2 | cnvexg 5148 | . . 3 | |
3 | 2 | adantl 275 | . 2 |
4 | cnvf1o 6204 | . . 3 | |
5 | 4 | adantr 274 | . 2 |
6 | f1oen2g 6733 | . 2 | |
7 | 1, 3, 5, 6 | syl3anc 1233 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wcel 2141 cvv 2730 csn 3583 cuni 3796 class class class wbr 3989 cmpt 4050 ccnv 4610 wrel 4616 wf1o 5197 cen 6716 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 ax-un 4418 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-sbc 2956 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-br 3990 df-opab 4051 df-mpt 4052 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-1st 6119 df-2nd 6120 df-en 6719 |
This theorem is referenced by: cnvct 6787 relcnvfi 6918 |
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