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| Mirrors > Home > MPE Home > Th. List > breq | Structured version Visualization version GIF version | ||
| Description: Equality theorem for binary relations. (Contributed by NM, 4-Jun-1995.) |
| Ref | Expression |
|---|---|
| breq | ⊢ (𝑅 = 𝑆 → (𝐴𝑅𝐵 ↔ 𝐴𝑆𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eleq2 2853 | . 2 ⊢ (𝑅 = 𝑆 → (〈𝐴, 𝐵〉 ∈ 𝑅 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
| 2 | df-br 5103 | . 2 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
| 3 | df-br 5103 | . 2 ⊢ (𝐴𝑆𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆) | |
| 4 | 1, 2, 3 | 3bitr4g 316 | 1 ⊢ (𝑅 = 𝑆 → (𝐴𝑅𝐵 ↔ 𝐴𝑆𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 = wceq 1562 ∈ wcel 2144 〈cop 4590 class class class wbr 5102 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-ext 2736 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-ex 1802 df-cleq 2756 df-clel 2839 df-br 5103 |
| This theorem is referenced by: breqi 5108 breqd 5113 poeq1 5560 soeq1 5578 freq1 5616 fveq1 6868 foeqcnvco 7286 f1eqcocnv 7287 isoeq2 7304 isoeq3 7305 eqfunresadj 7346 brfvopab 7455 ofreq 7666 supeq3 9397 oieq1 9462 ttrcleq 9666 dcomex 10406 axdc2lem 10407 brdom3 10487 brdom7disj 10490 brdom6disj 10491 dfrtrclrec2 15073 relexpindlem 15078 rtrclind 15080 shftfval 15085 isprs 18330 isdrs 18335 ispos 18348 istos 18450 resspos 18463 chneq1 18646 efglem 19758 frgpuplem 19814 ordtval 23251 utop2nei 24312 utop3cls 24313 isucn2 24340 ucnima 24342 iducn 24344 ex-opab 30636 acycgr0v 35503 prclisacycgr 35506 satf 35708 cureq 38100 poimirlem31 38155 poimir 38157 cosseq 39020 elrefrels3 39103 elcnvrefrels3 39119 elsymrels3 39142 elsymrels5 39144 eltrrels3 39168 eleqvrels3 39181 brabsb2 39491 rfovfvd 44583 fsovrfovd 44590 relpeq2 45526 relpeq3 45527 sprsymrelf 48106 sprsymrelfo 48108 upwlkbprop 48765 |
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