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| Mirrors > Home > ILE Home > Th. List > 3brtr3d | GIF version | ||
| Description: Substitution of equality into both sides of a binary relation. (Contributed by NM, 18-Oct-1999.) |
| Ref | Expression |
|---|---|
| 3brtr3d.1 | ⊢ (𝜑 → 𝐴𝑅𝐵) |
| 3brtr3d.2 | ⊢ (𝜑 → 𝐴 = 𝐶) |
| 3brtr3d.3 | ⊢ (𝜑 → 𝐵 = 𝐷) |
| Ref | Expression |
|---|---|
| 3brtr3d | ⊢ (𝜑 → 𝐶𝑅𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3brtr3d.1 | . 2 ⊢ (𝜑 → 𝐴𝑅𝐵) | |
| 2 | 3brtr3d.2 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐶) | |
| 3 | 3brtr3d.3 | . . 3 ⊢ (𝜑 → 𝐵 = 𝐷) | |
| 4 | 2, 3 | breq12d 4143 | . 2 ⊢ (𝜑 → (𝐴𝑅𝐵 ↔ 𝐶𝑅𝐷)) |
| 5 | 1, 4 | mpbid 147 | 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: ofrval 6313 phplem2 7154 ltaddnq 7775 prarloclemarch2 7787 prmuloclemcalc 7933 axcaucvglemcau 8266 apreap 8918 ltmul1 8923 divap1d 9134 div2subap 9170 lemul2a 9192 mul2lt0rlt0 10171 xleadd2a 10287 monoord2 10937 expubnd 11047 bernneq2 11113 nn0ltexp2 11162 apexp1 11171 resqrexlemcalc2 11796 resqrexlemcalc3 11797 abs2dif2 11889 bdtrilem 12023 bdtri 12024 xrmaxaddlem 12044 fsum00 12247 iserabs 12260 geosergap 12291 mertenslemi1 12320 eftlub 12475 eirraplem 12562 bitscmp 12743 unitmulcl 14471 unitgrp 14474 xblss2 15558 xmstri2 15623 mstri2 15624 xmstri 15625 mstri 15626 xmstri3 15627 mstri3 15628 msrtri 15629 logdivlti 16036 ppiqp1le 16189 ppiqeq0 16202 chtublem 16217 chtqub 16218 perfectlem2 16222 2sqlem8 16364 apdifflemr 17218 |
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