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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 4144 | . 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 4131 |
| 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 4132 |
| This theorem is used by: f1oiso2 6036 prarloclemarch2 7792 caucvgprprlemmu 8068 caucvgsrlembound 8167 mulap0 8990 lediv12a 9232 recp1lt1 9237 xleadd1a 10292 fldiv4p1lem1div2 10761 fldiv4lem1div2 10763 intfracq 10778 modqmulnn 10800 addmodlteq 10856 frecfzennn 10884 monoord2 10944 expgt1 11035 leexp2r 11051 leexp1a 11052 bernneq 11119 faclbnd 11201 faclbnd6 11204 facubnd 11205 hashunlem 11266 zfz1isolemiso 11313 sqrtgt0 11822 absrele 11872 absimle 11873 abstri 11893 abs2difabs 11897 bdtrilem 12030 bdtri 12031 xrmaxifle 12037 xrmaxadd 12052 xrbdtri 12067 climsqz 12126 climsqz2 12127 fsum3cvg2 12186 isumle 12287 expcnvap0 12294 expcnvre 12295 explecnv 12297 cvgratz 12324 efcllemp 12450 ege2le3 12463 eflegeo 12493 cos12dec 12560 fsumdvds 12634 phibnd 13024 pcdvdstr 13135 pcprmpw2 13141 pockthg 13165 2expltfac 13248 znrrg 15104 psmetres2 15559 xmetres2 15605 comet 15725 bdxmet 15727 cnmet 15756 ivthdec 15870 limcimolemlt 15890 efap1p 16005 tangtx 16065 logbgcd1irraplemap 16205 birthdaylem3 16227 chtqwordi 16263 ppiqwordi 16268 ppiqub 16293 chtqleppi 16294 chtublem 16295 chtqub 16296 bcmono 16304 bclbnd 16307 bposlem1 16311 bposlem6 16316 bposlem9 16319 2lgslem1c 16414 cvgcmp2nlemabs 17287 trilpolemlt1 17297 |
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