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| Mirrors > Home > MPE Home > Th. List > eqtr3 | Structured version Visualization version GIF version | ||
| Description: A transitive law for class equality. (Contributed by NM, 20-May-2005.) (Proof shortened by Wolf Lammen, 24-Oct-2024.) |
| Ref | Expression |
|---|---|
| eqtr3 | ⊢ ((𝐴 = 𝐶 ∧ 𝐵 = 𝐶) → 𝐴 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeq2 2749 | . 2 ⊢ (𝐵 = 𝐶 → (𝐴 = 𝐵 ↔ 𝐴 = 𝐶)) | |
| 2 | 1 | biimparc 479 | 1 ⊢ ((𝐴 = 𝐶 ∧ 𝐵 = 𝐶) → 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 |
| This theorem is referenced by: neneor 3033 moeq 3667 euind 3684 reuind 3713 disjeq0 4410 ssprsseq 4783 mosneq 4800 prnebg 4814 prnesn 4818 prel12g 4822 3elpr2eq 4864 eusv1 5338 axprglem 5382 xpcan 6142 xpcan2 6143 funopg 6534 funopdmsn 7105 funsndifnop 7106 fvf1pr 7263 resf1extb 7886 wfr3g 8271 oawordeulem 8491 nnasmo 8601 en1eqsn 9187 ixpfi2 9262 frr3g 9680 isf32lem2 10276 fpwwe2lem12 10565 1re 11144 receu 11794 xrlttri 13065 injresinjlem 13718 fsumparts 15741 odd2np1 16280 prmreclem2 16857 divsfval 17480 isprs 18231 psrn 18510 grpinveu 18916 symgextf1 19362 symgfixf1 19378 efgrelexlemb 19691 lspextmo 21020 evlseu 22050 tgcmp 23357 sqf11 27117 dchrisumlem2 27469 ltssolem1 27655 nocvxminlem 27762 divsmo 28192 axlowdimlem15 29041 axcontlem2 29050 wlksoneq1eq2 29748 spthonepeq 29837 uspgrn2crct 29893 wwlksnextinj 29984 frgrwopreglem5lem 30407 numclwwlk1lem2f1 30444 nsnlplig 30569 nsnlpligALT 30570 grpoinveu 30607 5oalem4 31745 rnbra 32195 xreceu 33014 bnj594 35088 bnj953 35115 fnsingle 36133 funimage 36142 funtransport 36247 funray 36356 funline 36358 hilbert1.2 36371 lineintmo 36373 bj-bary1 37567 poimirlem13 37884 poimirlem14 37885 poimirlem17 37888 poimirlem27 37898 mopre 38722 sucmapleftuniq 38741 antisymressn 38785 disjdmqscossss 39157 prter2 39257 cdleme 40936 rediveud 42813 kelac2lem 43421 frege124d 44117 2ffzoeq 47687 sprsymrelf1lem 47851 paireqne 47871 usgrexmpl2trifr 48397 gpg5grlic 48454 pgnbgreunbgrlem2 48477 mof0ALT 49199 mofsn 49203 f1omoOLD 49253 oppcendc 49377 |
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