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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 2751 | . 2 ⊢ (𝐵 = 𝐶 → (𝐴 = 𝐵 ↔ 𝐴 = 𝐶)) | |
| 2 | 1 | biimparc 480 | 1 ⊢ ((𝐴 = 𝐶 ∧ 𝐵 = 𝐶) → 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-9 2129 ax-ext 2711 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-ex 1787 df-cleq 2731 |
| This theorem is referenced by: neneor 3034 moeq 3648 euind 3665 reuind 3694 disjeq0 4384 ssprsseq 4756 mosneq 4773 prnebg 4787 prnesn 4791 prel12g 4795 3elpr2eq 4837 eusv1 5320 axprglem 5365 xpcan 6127 xpcan2 6128 funopg 6519 funopdmsn 7093 funsndifnop 7094 fvf1pr 7251 resf1extb 7874 wfr3g 8259 oawordeulem 8479 nnasmo 8589 en1eqsn 9175 ixpfi2 9250 frr3g 9671 isf32lem2 10267 fpwwe2lem12 10556 1re 11135 receu 11786 xrlttri 13081 injresinjlem 13736 fsumparts 15760 odd2np1 16301 prmreclem2 16879 divsfval 17502 isprs 18253 psrn 18532 grpinveu 18941 symgextf1 19387 symgfixf1 19403 efgrelexlemb 19716 lspextmo 21046 evlseu 22059 tgcmp 23384 sqf11 27120 dchrisumlem2 27471 ltssolem1 27657 nocvxminlem 27764 divsmo 28194 axlowdimlem15 29043 axcontlem2 29052 wlksoneq1eq2 29749 spthonepeq 29838 uspgrn2crct 29894 wwlksnextinj 29985 frgrwopreglem5lem 30408 numclwwlk1lem2f1 30445 nsnlplig 30570 nsnlpligALT 30571 grpoinveu 30608 5oalem4 31746 rnbra 32196 xreceu 33000 bnj594 35094 bnj953 35121 fnsingle 36145 funimage 36154 funtransport 36259 funray 36368 funline 36370 hilbert1.2 36383 lineintmo 36385 bj-bary1 37672 poimirlem13 38000 poimirlem14 38001 poimirlem17 38004 poimirlem27 38014 mopre 38838 sucmapleftuniq 38857 antisymressn 38901 disjdmqscossss 39273 prter2 39373 cdleme 41052 rediveud 42920 kelac2lem 43509 frege124d 44205 2ffzoeq 47791 sprsymrelf1lem 47966 paireqne 47986 usgrexmpl2trifr 48528 gpg5grlic 48585 pgnbgreunbgrlem2 48608 mof0ALT 49330 mofsn 49334 f1omoOLD 49384 oppcendc 49508 |
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