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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 10291 fldiv4p1lem1div2 10760 fldiv4lem1div2 10762 intfracq 10777 modqmulnn 10799 addmodlteq 10855 frecfzennn 10883 monoord2 10943 expgt1 11034 leexp2r 11050 leexp1a 11051 bernneq 11118 faclbnd 11200 faclbnd6 11203 facubnd 11204 hashunlem 11265 zfz1isolemiso 11312 sqrtgt0 11821 absrele 11871 absimle 11872 abstri 11892 abs2difabs 11896 bdtrilem 12029 bdtri 12030 xrmaxifle 12036 xrmaxadd 12051 xrbdtri 12066 climsqz 12125 climsqz2 12126 fsum3cvg2 12185 isumle 12286 expcnvap0 12293 expcnvre 12294 explecnv 12296 cvgratz 12323 efcllemp 12449 ege2le3 12462 eflegeo 12492 cos12dec 12559 fsumdvds 12633 phibnd 13023 pcdvdstr 13134 pcprmpw2 13140 pockthg 13164 2expltfac 13247 znrrg 15103 psmetres2 15576 xmetres2 15622 comet 15742 bdxmet 15744 cnmet 15773 ivthdec 15887 limcimolemlt 15907 efap1p 16022 tangtx 16082 logbgcd1irraplemap 16222 birthdaylem3 16244 chtqwordi 16280 ppiqwordi 16285 ppiqub 16310 chtqleppi 16311 chtublem 16312 chtqub 16313 bcmono 16321 bclbnd 16324 bposlem1 16328 bposlem6 16333 bposlem9 16336 2lgslem1c 16431 cvgcmp2nlemabs 17304 trilpolemlt1 17314 |
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