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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 2830 | . 2 ⊢ (𝑅 = 𝑆 → (〈𝐴, 𝐵〉 ∈ 𝑅 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
| 2 | df-br 5076 | . 2 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
| 3 | df-br 5076 | . 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 1548 ∈ wcel 2121 〈cop 4564 class class class wbr 5075 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-ext 2713 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-ex 1788 df-cleq 2733 df-clel 2816 df-br 5076 |
| This theorem is referenced by: breqi 5081 breqd 5086 poeq1 5532 soeq1 5550 freq1 5588 fveq1 6830 foeqcnvco 7248 f1eqcocnv 7249 isoeq2 7266 isoeq3 7267 eqfunresadj 7308 brfvopab 7417 ofreq 7628 supeq3 9356 oieq1 9421 ttrcleq 9625 dcomex 10364 axdc2lem 10365 brdom3 10445 brdom7disj 10448 brdom6disj 10449 dfrtrclrec2 15015 relexpindlem 15020 rtrclind 15022 shftfval 15027 isprs 18257 isdrs 18262 ispos 18275 istos 18377 resspos 18390 chneq1 18573 efglem 19686 frgpuplem 19742 ordtval 23176 utop2nei 24237 utop3cls 24238 isucn2 24265 ucnima 24267 iducn 24269 ex-opab 30524 acycgr0v 35391 prclisacycgr 35394 satf 35596 cureq 37978 poimirlem31 38033 poimir 38035 cosseq 38898 elrefrels3 38981 elcnvrefrels3 38997 elsymrels3 39020 elsymrels5 39022 eltrrels3 39046 eleqvrels3 39059 brabsb2 39369 rfovfvd 44461 fsovrfovd 44468 relpeq2 45404 relpeq3 45405 sprsymrelf 47984 sprsymrelfo 47986 upwlkbprop 48643 |
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