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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 2773 | . 2 ⊢ (𝐵 = 𝐶 → (𝐴 = 𝐵 ↔ 𝐴 = 𝐶)) | |
| 2 | 1 | biimparc 485 | 1 ⊢ ((𝐴 = 𝐶 ∧ 𝐵 = 𝐶) → 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-9 2155 ax-ext 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2753 |
| This theorem is used by: neneor 3058 moeq 3665 euind 3682 reuind 3711 disjeq0 4409 ssprsseq 4786 mosneq 4802 prnebg 4816 prnesn 4820 prel12g 4824 3elpr2eq 4866 eusv1 5353 axprglem 5394 xpcan 6168 xpcan2 6169 funopg 6574 funopdmsn 7154 funsndifnop 7155 fvf1pr 7315 resf1extb 7946 wfr3g 8337 oawordeulem 8562 nnasmo 8672 en1eqsn 9266 ixpfi2 9339 frr3g 9760 isf32lem2 10432 fpwwe2lem12 10727 1re 11308 receu 11961 xrlttri 13268 injresinjlem 13925 fsumparts 15973 odd2np1 16511 prmreclem2 17095 divsfval 17719 isprs 18470 psrn 18749 grpinveu 19185 symgextf1 19635 symgfixf1 19651 efgrelexlemb 19964 lspextmo 21331 evlseu 22392 tgcmp 23719 sqf11 27466 dchrisumlem2 27817 ltssolem1 28032 nocvxminlem 28140 divsmo 28570 axlowdimlem15 29534 axcontlem2 29543 wlksoneq1eq2 30243 spthonepeq 30338 uspgrn2crct 30397 wwlksnextinj 30488 frgrwopreglem5lem 30921 numclwwlk1lem2f1 30958 nsnlplig 31083 nsnlpligALT 31084 grpoinveu 31121 5oalem4 32259 rnbra 32709 xreceu 33488 bnj594 35542 bnj953 35569 scottsn 35750 fnsingle 36681 funimage 36690 funtransport 36796 funray 36905 funline 36907 hilbert1.2 36920 lineintmo 36922 bj-bary1 38233 poimirlem13 38551 poimirlem14 38552 poimirlem17 38555 poimirlem27 38565 mopre 39403 sucmapleftuniq 39422 antisymressn 39466 disjdmqscossss 39838 prter2 39938 cdleme 41617 rediveud 43494 kelac2lem 44065 frege124d 44760 2ffzoeq 48397 sprsymrelf1lem 48572 paireqne 48592 usgrexmpl2trifr 49134 gpg5grlic 49191 pgnbgreunbgrlem2 49214 mof0ALT 49949 mofsn 49953 f1omoOLD 50001 oppcendc 50125 |
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