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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 2745 | . 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 1541 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-9 2123 ax-ext 2705 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2725 |
| This theorem is referenced by: neneor 3030 moeq 3663 euind 3680 reuind 3709 disjeq0 4407 ssprsseq 4778 mosneq 4795 prnebg 4809 prnesn 4813 prel12g 4817 3elpr2eq 4859 eusv1 5333 xpcan 6131 xpcan2 6132 funopg 6523 funopdmsn 7092 funsndifnop 7093 fvf1pr 7250 resf1extb 7873 wfr3g 8258 oawordeulem 8478 nnasmo 8587 en1eqsn 9169 ixpfi2 9244 frr3g 9659 isf32lem2 10255 fpwwe2lem12 10543 1re 11122 receu 11772 xrlttri 13048 injresinjlem 13700 fsumparts 15723 odd2np1 16262 prmreclem2 16839 divsfval 17461 isprs 18212 psrn 18491 grpinveu 18897 symgextf1 19343 symgfixf1 19359 efgrelexlemb 19672 lspextmo 21000 evlseu 22028 tgcmp 23326 sqf11 27086 dchrisumlem2 27438 sltsolem1 27624 nocvxminlem 27727 divsmo 28133 axlowdimlem15 28945 axcontlem2 28954 wlksoneq1eq2 29652 spthonepeq 29741 uspgrn2crct 29797 wwlksnextinj 29888 frgrwopreglem5lem 30311 numclwwlk1lem2f1 30348 nsnlplig 30472 nsnlpligALT 30473 grpoinveu 30510 5oalem4 31648 rnbra 32098 xreceu 32913 bnj594 34935 bnj953 34962 fnsingle 35972 funimage 35981 funtransport 36086 funray 36195 funline 36197 hilbert1.2 36210 lineintmo 36212 bj-bary1 37367 poimirlem13 37683 poimirlem14 37684 poimirlem17 37687 poimirlem27 37697 mopre 38494 sucmapleftuniq 38512 antisymressn 38556 disjdmqscossss 38911 prter2 38990 cdleme 40669 rediveud 42551 kelac2lem 43171 frege124d 43868 2ffzoeq 47441 sprsymrelf1lem 47605 paireqne 47625 usgrexmpl2trifr 48151 gpg5grlic 48208 pgnbgreunbgrlem2 48231 mof0ALT 48954 mofsn 48958 f1omoOLD 49008 oppcendc 49133 |
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