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Mirrors > Home > NFE Home > Th. List > brcnv | GIF version |
Description: The converse of a binary relation swaps arguments. Theorem 11 of [Suppes] p. 61. (Contributed by set.mm contributors, 13-Aug-1995.) |
Ref | Expression |
---|---|
brcnv | ⊢ (A◡RB ↔ BRA) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | brex 4690 | . 2 ⊢ (A◡RB → (A ∈ V ∧ B ∈ V)) | |
2 | brex 4690 | . . 3 ⊢ (BRA → (B ∈ V ∧ A ∈ V)) | |
3 | 2 | ancomd 438 | . 2 ⊢ (BRA → (A ∈ V ∧ B ∈ V)) |
4 | breq2 4644 | . . 3 ⊢ (x = A → (yRx ↔ yRA)) | |
5 | breq1 4643 | . . 3 ⊢ (y = B → (yRA ↔ BRA)) | |
6 | df-cnv 4786 | . . 3 ⊢ ◡R = {〈x, y〉 ∣ yRx} | |
7 | 4, 5, 6 | brabg 4707 | . 2 ⊢ ((A ∈ V ∧ B ∈ V) → (A◡RB ↔ BRA)) |
8 | 1, 3, 7 | pm5.21nii 342 | 1 ⊢ (A◡RB ↔ BRA) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 176 ∧ wa 358 ∈ wcel 1710 Vcvv 2860 class class class wbr 4640 ◡ccnv 4772 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1546 ax-5 1557 ax-17 1616 ax-9 1654 ax-8 1675 ax-13 1712 ax-14 1714 ax-6 1729 ax-7 1734 ax-11 1746 ax-12 1925 ax-ext 2334 ax-nin 4079 ax-xp 4080 ax-cnv 4081 ax-1c 4082 ax-sset 4083 ax-si 4084 ax-ins2 4085 ax-ins3 4086 ax-typlower 4087 ax-sn 4088 |
This theorem depends on definitions: df-bi 177 df-or 359 df-an 360 df-3or 935 df-3an 936 df-nan 1288 df-tru 1319 df-ex 1542 df-nf 1545 df-sb 1649 df-eu 2208 df-mo 2209 df-clab 2340 df-cleq 2346 df-clel 2349 df-nfc 2479 df-ne 2519 df-ral 2620 df-rex 2621 df-reu 2622 df-rmo 2623 df-rab 2624 df-v 2862 df-sbc 3048 df-nin 3212 df-compl 3213 df-in 3214 df-un 3215 df-dif 3216 df-symdif 3217 df-ss 3260 df-pss 3262 df-nul 3552 df-if 3664 df-pw 3725 df-sn 3742 df-pr 3743 df-uni 3893 df-int 3928 df-opk 4059 df-1c 4137 df-pw1 4138 df-uni1 4139 df-xpk 4186 df-cnvk 4187 df-ins2k 4188 df-ins3k 4189 df-imak 4190 df-cok 4191 df-p6 4192 df-sik 4193 df-ssetk 4194 df-imagek 4195 df-idk 4196 df-iota 4340 df-0c 4378 df-addc 4379 df-nnc 4380 df-fin 4381 df-lefin 4441 df-ltfin 4442 df-ncfin 4443 df-tfin 4444 df-evenfin 4445 df-oddfin 4446 df-sfin 4447 df-spfin 4448 df-phi 4566 df-op 4567 df-proj1 4568 df-proj2 4569 df-opab 4624 df-br 4641 df-cnv 4786 |
This theorem is referenced by: opelcnv 4894 cnvco 4895 eldm 4899 dfrn4 4905 brelrn 4961 eliniseg 5021 epini 5022 iniseg 5023 cnvsym 5028 intasym 5029 dminss 5042 imainss 5043 dminxp 5062 cnvcnv 5063 dfxp2 5114 dffun2 5120 funcnv2 5156 fun11 5160 imadif 5172 isocnv2 5493 dfid4 5504 cnvswap 5511 cnvsi 5519 trtxp 5782 brtxp 5784 brimage 5794 oqelins4 5795 composeex 5821 crossex 5851 pw1fnex 5853 qsexg 5983 mapexi 6004 fundmen 6044 enpw1lem1 6062 enpw1 6063 enmap2lem4 6067 enmap1lem4 6073 enprmaplem3 6079 lecex 6116 ovmuc 6131 mucex 6134 ovcelem1 6172 tcfnex 6245 csucex 6260 nnltp1clem1 6262 addccan2nclem1 6264 addccan2nclem2 6265 nmembers1lem1 6269 nnc3n3p1 6279 spacvallem1 6282 nchoicelem10 6299 nchoicelem11 6300 nchoicelem16 6305 |
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