| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 7786 caucvgprprlemmu 8062 caucvgsrlembound 8161 mulap0 8984 lediv12a 9226 recp1lt1 9231 xleadd1a 10285 fldiv4p1lem1div2 10753 fldiv4lem1div2 10755 intfracq 10770 modqmulnn 10792 addmodlteq 10848 frecfzennn 10876 monoord2 10936 expgt1 11027 leexp2r 11043 leexp1a 11044 bernneq 11111 faclbnd 11193 faclbnd6 11196 facubnd 11197 hashunlem 11258 zfz1isolemiso 11305 sqrtgt0 11814 absrele 11864 absimle 11865 abstri 11885 abs2difabs 11889 bdtrilem 12021 bdtri 12022 xrmaxifle 12028 xrmaxadd 12043 xrbdtri 12058 climsqz 12117 climsqz2 12118 fsum3cvg2 12177 isumle 12278 expcnvap0 12285 expcnvre 12286 explecnv 12288 cvgratz 12315 efcllemp 12441 ege2le3 12454 eflegeo 12484 cos12dec 12551 fsumdvds 12625 phibnd 13015 pcdvdstr 13126 pcprmpw2 13132 pockthg 13156 2expltfac 13239 znrrg 15044 psmetres2 15483 xmetres2 15529 comet 15649 bdxmet 15651 cnmet 15680 ivthdec 15794 limcimolemlt 15814 efap1p 15929 tangtx 15989 logbgcd1irraplemap 16124 birthdaylem3 16146 ppiqwordi 16174 ppiqub 16194 bcmono 16202 bclbnd 16205 bposlem1 16209 2lgslem1c 16307 cvgcmp2nlemabs 17179 trilpolemlt1 17188 |
| Copyright terms: Public domain | W3C validator |