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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 3654 euind 3671 reuind 3700 disjeq0 4397 ssprsseq 4769 mosneq 4786 prnebg 4800 prnesn 4804 prel12g 4808 3elpr2eq 4850 eusv1 5329 axprglem 5374 xpcan 6135 xpcan2 6136 funopg 6527 funopdmsn 7098 funsndifnop 7099 fvf1pr 7256 resf1extb 7879 wfr3g 8263 oawordeulem 8483 nnasmo 8593 en1eqsn 9179 ixpfi2 9254 frr3g 9674 isf32lem2 10270 fpwwe2lem12 10559 1re 11138 receu 11789 xrlttri 13084 injresinjlem 13739 fsumparts 15763 odd2np1 16304 prmreclem2 16882 divsfval 17505 isprs 18256 psrn 18535 grpinveu 18944 symgextf1 19390 symgfixf1 19406 efgrelexlemb 19719 lspextmo 21046 evlseu 22074 tgcmp 23379 sqf11 27119 dchrisumlem2 27470 ltssolem1 27656 nocvxminlem 27763 divsmo 28193 axlowdimlem15 29042 axcontlem2 29051 wlksoneq1eq2 29749 spthonepeq 29838 uspgrn2crct 29894 wwlksnextinj 29985 frgrwopreglem5lem 30408 numclwwlk1lem2f1 30445 nsnlplig 30570 nsnlpligALT 30571 grpoinveu 30608 5oalem4 31746 rnbra 32196 xreceu 32999 bnj594 35073 bnj953 35100 fnsingle 36118 funimage 36127 funtransport 36232 funray 36341 funline 36343 hilbert1.2 36356 lineintmo 36358 bj-bary1 37645 poimirlem13 37971 poimirlem14 37972 poimirlem17 37975 poimirlem27 37985 mopre 38809 sucmapleftuniq 38828 antisymressn 38872 disjdmqscossss 39244 prter2 39344 cdleme 41023 rediveud 42892 kelac2lem 43513 frege124d 44209 2ffzoeq 47791 sprsymrelf1lem 47966 paireqne 47986 usgrexmpl2trifr 48528 gpg5grlic 48585 pgnbgreunbgrlem2 48608 mof0ALT 49330 mofsn 49334 f1omoOLD 49384 oppcendc 49508 |
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