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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 2901 | . 2 ⊢ (𝑅 = 𝑆 → (〈𝐴, 𝐵〉 ∈ 𝑅 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
2 | df-br 5067 | . 2 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
3 | df-br 5067 | . 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 1537 ∈ wcel 2114 〈cop 4573 class class class wbr 5066 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1781 df-cleq 2814 df-clel 2893 df-br 5067 |
This theorem is referenced by: breqi 5072 breqd 5077 poeq1 5477 soeq1 5494 freq1 5525 fveq1 6669 foeqcnvco 7056 f1eqcocnv 7057 isoeq2 7071 isoeq3 7072 brfvopab 7211 ofreq 7412 supeq3 8913 oieq1 8976 dcomex 9869 axdc2lem 9870 brdom3 9950 brdom7disj 9953 brdom6disj 9954 dfrtrclrec2 14416 relexpindlem 14422 rtrclind 14424 shftfval 14429 isprs 17540 isdrs 17544 ispos 17557 istos 17645 efglem 18842 frgpuplem 18898 ordtval 21797 utop2nei 22859 utop3cls 22860 isucn2 22888 ucnima 22890 iducn 22892 ex-opab 28211 resspos 30646 acycgr0v 32395 prclisacycgr 32398 satf 32600 eqfunresadj 33004 cureq 34883 poimirlem31 34938 poimir 34940 cosseq 35686 elrefrels3 35773 elcnvrefrels3 35786 elsymrels3 35805 elsymrels5 35807 eltrrels3 35831 eleqvrels3 35843 brabsb2 36013 rfovfvd 40368 fsovrfovd 40375 sprsymrelf 43677 sprsymrelfo 43679 upwlkbprop 44033 |
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