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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 2748 | . 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 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2728 |
| This theorem is referenced by: neneor 3032 moeq 3665 euind 3682 reuind 3711 disjeq0 4408 ssprsseq 4781 mosneq 4798 prnebg 4812 prnesn 4816 prel12g 4820 3elpr2eq 4862 eusv1 5336 xpcan 6134 xpcan2 6135 funopg 6526 funopdmsn 7095 funsndifnop 7096 fvf1pr 7253 resf1extb 7876 wfr3g 8261 oawordeulem 8481 nnasmo 8591 en1eqsn 9175 ixpfi2 9250 frr3g 9668 isf32lem2 10264 fpwwe2lem12 10553 1re 11132 receu 11782 xrlttri 13053 injresinjlem 13706 fsumparts 15729 odd2np1 16268 prmreclem2 16845 divsfval 17468 isprs 18219 psrn 18498 grpinveu 18904 symgextf1 19350 symgfixf1 19366 efgrelexlemb 19679 lspextmo 21008 evlseu 22038 tgcmp 23345 sqf11 27105 dchrisumlem2 27457 ltssolem1 27643 nocvxminlem 27750 divsmo 28180 axlowdimlem15 29029 axcontlem2 29038 wlksoneq1eq2 29736 spthonepeq 29825 uspgrn2crct 29881 wwlksnextinj 29972 frgrwopreglem5lem 30395 numclwwlk1lem2f1 30432 nsnlplig 30556 nsnlpligALT 30557 grpoinveu 30594 5oalem4 31732 rnbra 32182 xreceu 33003 bnj594 35068 bnj953 35095 fnsingle 36111 funimage 36120 funtransport 36225 funray 36334 funline 36336 hilbert1.2 36349 lineintmo 36351 bj-bary1 37517 poimirlem13 37834 poimirlem14 37835 poimirlem17 37838 poimirlem27 37848 mopre 38645 sucmapleftuniq 38663 antisymressn 38707 disjdmqscossss 39062 prter2 39141 cdleme 40820 rediveud 42698 kelac2lem 43306 frege124d 44002 2ffzoeq 47573 sprsymrelf1lem 47737 paireqne 47757 usgrexmpl2trifr 48283 gpg5grlic 48340 pgnbgreunbgrlem2 48363 mof0ALT 49085 mofsn 49089 f1omoOLD 49139 oppcendc 49263 |
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