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| Mirrors > Home > ILE Home > Th. List > breqan12d | GIF version | ||
| Description: Equality deduction for a binary relation. (Contributed by NM, 8-Feb-1996.) |
| Ref | Expression |
|---|---|
| breq1d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| breqan12i.2 | ⊢ (𝜓 → 𝐶 = 𝐷) |
| Ref | Expression |
|---|---|
| breqan12d | ⊢ ((𝜑 ∧ 𝜓) → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq1d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | breqan12i.2 | . 2 ⊢ (𝜓 → 𝐶 = 𝐷) | |
| 3 | breq12 4114 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐷)) | |
| 4 | 1, 2, 3 | syl2an 289 | 1 ⊢ ((𝜑 ∧ 𝜓) → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐷)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1398 class class class wbr 4109 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-v 2815 df-un 3215 df-sn 3695 df-pr 3696 df-op 3698 df-br 4110 |
| This theorem is referenced by: breqan12rd 4126 sosng 4823 isoresbr 5982 isoid 5983 isores3 5988 isoini2 5992 ofrfval 6275 oviec 6875 enqbreq2 7672 ltresr2 8155 axpre-ltadd 8201 leltadd 8721 xltneg 10169 lt2sq 10975 le2sq 10976 cnreim 11663 sqrtle 11721 sqrtlt 11722 absext 11748 reefiso 15642 logltb 15739 lgsquadlem3 15952 |
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