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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 2858 | . 2 ⊢ (𝑅 = 𝑆 → (〈𝐴, 𝐵〉 ∈ 𝑅 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
| 2 | df-br 5112 | . 2 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
| 3 | df-br 5112 | . 2 ⊢ (𝐴𝑆𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆) | |
| 4 | 1, 2, 3 | 3bitr4g 317 | 1 ⊢ (𝑅 = 𝑆 → (𝐴𝑅𝐵 ↔ 𝐴𝑆𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1567 ∈ wcel 2149 〈cop 4598 class class class wbr 5111 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1807 df-cleq 2761 df-clel 2844 df-br 5112 |
| This theorem is referenced by: breqi 5117 breqd 5122 poeq1 5573 soeq1 5591 freq1 5629 fveq1 6881 foeqcnvco 7299 f1eqcocnv 7300 isoeq2 7317 isoeq3 7318 eqfunresadj 7359 brfvopab 7468 ofreq 7679 supeq3 9409 oieq1 9474 ttrcleq 9678 dcomex 10431 axdc2lem 10432 brdom3 10512 brdom7disj 10515 brdom6disj 10516 dfrtrclrec2 15095 relexpindlem 15100 rtrclind 15102 shftfval 15107 isprs 18352 isdrs 18357 ispos 18370 istos 18472 resspos 18485 chneq1 18668 efglem 19786 frgpuplem 19842 ordtval 23315 utop2nei 24376 utop3cls 24377 isucn2 24404 ucnima 24406 iducn 24408 ex-opab 30724 acycgr0v 35573 prclisacycgr 35576 satf 35778 cureq 38170 poimirlem31 38225 poimir 38227 cosseq 39090 elrefrels3 39173 elcnvrefrels3 39189 elsymrels3 39212 elsymrels5 39214 eltrrels3 39238 eleqvrels3 39251 brabsb2 39561 rfovfvd 44655 fsovrfovd 44662 relpeq2 45581 relpeq3 45582 sprsymrelf 48168 sprsymrelfo 48170 upwlkbprop 48827 |
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