| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > brcnvg | Structured version Visualization version GIF version | ||
| Description: The converse of a binary relation swaps arguments. Theorem 11 of [Suppes] p. 61. (Contributed by NM, 10-Oct-2005.) |
| Ref | Expression |
|---|---|
| brcnvg | ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴◡𝑅𝐵 ↔ 𝐵𝑅𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq2 5106 | . 2 ⊢ (𝑥 = 𝐴 → (𝑦𝑅𝑥 ↔ 𝑦𝑅𝐴)) | |
| 2 | breq1 5105 | . 2 ⊢ (𝑦 = 𝐵 → (𝑦𝑅𝐴 ↔ 𝐵𝑅𝐴)) | |
| 3 | df-cnv 5658 | . 2 ⊢ ◡𝑅 = {〈𝑥, 𝑦〉 ∣ 𝑦𝑅𝑥} | |
| 4 | 1, 2, 3 | brabg 5513 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴◡𝑅𝐵 ↔ 𝐵𝑅𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∈ wcel 2144 class class class wbr 5102 ◡ccnv 5649 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 ax-sep 5248 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-sn 4584 df-pr 4586 df-op 4590 df-br 5103 df-opab 5167 df-cnv 5658 |
| This theorem is used by: opelcnvg 5857 brcnv 5859 brelrng 5922 elinisegg 6090 relbrcnvg 6100 brcodir 6112 predep 6333 dffv2 6980 ersym 8730 brdifun 8748 eqinf 9477 inflb 9482 infglb 9483 infglbb 9484 infltoreq 9496 infempty 9501 brcnvtrclfv 15156 oduleg 18464 posglbdg 18587 znleval 21860 lenlts 28109 tgelrnpln 29254 brbtwn 29477 fcoinvbr 33199 cnvordtrestixx 34545 xrge0iifiso 34567 orvcgteel 35100 fv1stcnv 36541 fv2ndcnv 36542 wsuclem 36587 wsuclb 36590 colineardim1 36826 eldmcnv 39278 ineccnvmo 39290 alrmomorn 39291 brcnvin 39311 brxrn 39316 dfcoss3 39437 cosscnv 39439 brcoss3 39456 brcosscnv 39495 cosscnvssid3 39499 cosscnvssid4 39500 brnonrel 44589 ntrneifv2 45080 glbprlem 50073 gte-lte 50817 gt-lt 50818 |
| Copyright terms: Public domain | W3C validator |