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| Mirrors > Home > ILE Home > Th. List > 3brtr4d | GIF version | ||
| Description: Substitution of equality into both sides of a binary relation. (Contributed by NM, 21-Feb-2005.) |
| Ref | Expression |
|---|---|
| 3brtr4d.1 | ⊢ (𝜑 → 𝐴𝑅𝐵) |
| 3brtr4d.2 | ⊢ (𝜑 → 𝐶 = 𝐴) |
| 3brtr4d.3 | ⊢ (𝜑 → 𝐷 = 𝐵) |
| Ref | Expression |
|---|---|
| 3brtr4d | ⊢ (𝜑 → 𝐶𝑅𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3brtr4d.1 | . 2 ⊢ (𝜑 → 𝐴𝑅𝐵) | |
| 2 | 3brtr4d.2 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐴) | |
| 3 | 3brtr4d.3 | . . 3 ⊢ (𝜑 → 𝐷 = 𝐵) | |
| 4 | 2, 3 | breq12d 4143 | . 2 ⊢ (𝜑 → (𝐶𝑅𝐷 ↔ 𝐴𝑅𝐵)) |
| 5 | 1, 4 | mpbird 167 | 1 ⊢ (𝜑 → 𝐶𝑅𝐷) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 class class class wbr 4130 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-sn 3715 df-pr 3716 df-op 3718 df-br 4131 |
| This theorem is used by: f1oiso2 6033 prarloclemarch2 7787 caucvgprprlemmu 8063 caucvgsrlembound 8162 mulap0 8985 lediv12a 9227 recp1lt1 9232 xleadd1a 10286 fldiv4p1lem1div2 10755 fldiv4lem1div2 10757 intfracq 10772 modqmulnn 10794 addmodlteq 10850 frecfzennn 10878 monoord2 10938 expgt1 11029 leexp2r 11045 leexp1a 11046 bernneq 11113 faclbnd 11195 faclbnd6 11198 facubnd 11199 hashunlem 11260 zfz1isolemiso 11307 sqrtgt0 11816 absrele 11866 absimle 11867 abstri 11887 abs2difabs 11891 bdtrilem 12024 bdtri 12025 xrmaxifle 12031 xrmaxadd 12046 xrbdtri 12061 climsqz 12120 climsqz2 12121 fsum3cvg2 12180 isumle 12281 expcnvap0 12288 expcnvre 12289 explecnv 12291 cvgratz 12318 efcllemp 12444 ege2le3 12457 eflegeo 12487 cos12dec 12554 fsumdvds 12628 phibnd 13018 pcdvdstr 13129 pcprmpw2 13135 pockthg 13159 2expltfac 13242 znrrg 15086 psmetres2 15533 xmetres2 15579 comet 15699 bdxmet 15701 cnmet 15730 ivthdec 15844 limcimolemlt 15864 efap1p 15979 tangtx 16039 logbgcd1irraplemap 16179 birthdaylem3 16201 chtqwordi 16237 ppiqwordi 16242 ppiqub 16267 chtqleppi 16268 chtublem 16269 chtqub 16270 bcmono 16278 bclbnd 16281 bposlem1 16285 bposlem6 16290 bposlem9 16293 2lgslem1c 16388 cvgcmp2nlemabs 17260 trilpolemlt1 17270 |
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