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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 2820 | . 2 ⊢ (𝑅 = 𝑆 → (〈𝐴, 𝐵〉 ∈ 𝑅 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
| 2 | df-br 5094 | . 2 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
| 3 | df-br 5094 | . 2 ⊢ (𝐴𝑆𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆) | |
| 4 | 1, 2, 3 | 3bitr4g 314 | 1 ⊢ (𝑅 = 𝑆 → (𝐴𝑅𝐵 ↔ 𝐴𝑆𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1541 ∈ wcel 2111 〈cop 4581 class class class wbr 5093 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-ext 2703 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2723 df-clel 2806 df-br 5094 |
| This theorem is referenced by: breqi 5099 breqd 5104 poeq1 5530 soeq1 5548 freq1 5586 fveq1 6827 foeqcnvco 7240 f1eqcocnv 7241 isoeq2 7258 isoeq3 7259 eqfunresadj 7300 brfvopab 7409 ofreq 7620 supeq3 9339 oieq1 9404 ttrcleq 9605 dcomex 10344 axdc2lem 10345 brdom3 10425 brdom7disj 10428 brdom6disj 10429 dfrtrclrec2 14971 relexpindlem 14976 rtrclind 14978 shftfval 14983 isprs 18208 isdrs 18213 ispos 18226 istos 18328 resspos 18341 chneq1 18524 efglem 19634 frgpuplem 19690 ordtval 23110 utop2nei 24171 utop3cls 24172 isucn2 24199 ucnima 24201 iducn 24203 ex-opab 30419 acycgr0v 35199 prclisacycgr 35202 satf 35404 cureq 37642 poimirlem31 37697 poimir 37699 cosseq 38534 elrefrels3 38617 elcnvrefrels3 38633 elsymrels3 38656 elsymrels5 38658 eltrrels3 38682 eleqvrels3 38695 brabsb2 38967 rfovfvd 44100 fsovrfovd 44107 relpeq2 45043 relpeq3 45044 sprsymrelf 47600 sprsymrelfo 47602 upwlkbprop 48243 |
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