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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 2775 | . 2 ⊢ (𝐵 = 𝐶 → (𝐴 = 𝐵 ↔ 𝐴 = 𝐶)) | |
| 2 | 1 | biimparc 484 | 1 ⊢ ((𝐴 = 𝐶 ∧ 𝐵 = 𝐶) → 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1570 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1810 df-cleq 2755 |
| This theorem is referenced by: neneor 3060 moeq 3670 euind 3687 reuind 3716 disjeq0 4416 ssprsseq 4791 mosneq 4807 prnebg 4821 prnesn 4825 prel12g 4829 3elpr2eq 4871 eusv1 5362 axprglem 5407 xpcan 6174 xpcan2 6175 funopg 6570 funopdmsn 7147 funsndifnop 7148 fvf1pr 7305 resf1extb 7927 wfr3g 8312 oawordeulem 8535 nnasmo 8645 en1eqsn 9231 ixpfi2 9303 frr3g 9724 isf32lem2 10333 fpwwe2lem12 10622 1re 11203 receu 11854 xrlttri 13159 injresinjlem 13815 fsumparts 15854 odd2np1 16394 prmreclem2 16972 divsfval 17596 isprs 18347 psrn 18626 grpinveu 19036 symgextf1 19486 symgfixf1 19502 efgrelexlemb 19815 lspextmo 21177 evlseu 22234 tgcmp 23558 sqf11 27303 dchrisumlem2 27654 ltssolem1 27839 nocvxminlem 27947 divsmo 28377 axlowdimlem15 29306 axcontlem2 29315 wlksoneq1eq2 30012 spthonepeq 30101 uspgrn2crct 30157 wwlksnextinj 30248 frgrwopreglem5lem 30671 numclwwlk1lem2f1 30708 nsnlplig 30833 nsnlpligALT 30834 grpoinveu 30871 5oalem4 32009 rnbra 32459 xreceu 33241 bnj594 35300 bnj953 35327 scottsn 35520 fnsingle 36409 funimage 36418 funtransport 36523 funray 36632 funline 36634 hilbert1.2 36647 lineintmo 36649 bj-bary1 37956 poimirlem13 38284 poimirlem14 38285 poimirlem17 38288 poimirlem27 38298 mopre 39120 sucmapleftuniq 39139 antisymressn 39183 disjdmqscossss 39555 prter2 39655 cdleme 41334 rediveud 43204 kelac2lem 43791 frege124d 44487 2ffzoeq 48065 sprsymrelf1lem 48240 paireqne 48260 usgrexmpl2trifr 48802 gpg5grlic 48859 pgnbgreunbgrlem2 48882 mof0ALT 49618 mofsn 49622 f1omoOLD 49672 oppcendc 49796 |
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