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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 2826 | . 2 ⊢ (𝑅 = 𝑆 → (〈𝐴, 𝐵〉 ∈ 𝑅 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
| 2 | df-br 5100 | . 2 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
| 3 | df-br 5100 | . 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 1542 ∈ wcel 2114 〈cop 4587 class class class wbr 5099 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 df-clel 2812 df-br 5100 |
| This theorem is referenced by: breqi 5105 breqd 5110 poeq1 5536 soeq1 5554 freq1 5592 fveq1 6834 foeqcnvco 7248 f1eqcocnv 7249 isoeq2 7266 isoeq3 7267 eqfunresadj 7308 brfvopab 7417 ofreq 7628 supeq3 9356 oieq1 9421 ttrcleq 9622 dcomex 10361 axdc2lem 10362 brdom3 10442 brdom7disj 10445 brdom6disj 10446 dfrtrclrec2 14985 relexpindlem 14990 rtrclind 14992 shftfval 14997 isprs 18223 isdrs 18228 ispos 18241 istos 18343 resspos 18356 chneq1 18539 efglem 19649 frgpuplem 19705 ordtval 23137 utop2nei 24198 utop3cls 24199 isucn2 24226 ucnima 24228 iducn 24230 ex-opab 30511 acycgr0v 35344 prclisacycgr 35347 satf 35549 cureq 37799 poimirlem31 37854 poimir 37856 cosseq 38719 elrefrels3 38802 elcnvrefrels3 38818 elsymrels3 38841 elsymrels5 38843 eltrrels3 38867 eleqvrels3 38880 brabsb2 39190 rfovfvd 44310 fsovrfovd 44317 relpeq2 45253 relpeq3 45254 sprsymrelf 47808 sprsymrelfo 47810 upwlkbprop 48451 |
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