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Mirrors > Home > MPE Home > Th. List > 3eqtr3a | Structured version Visualization version GIF version |
Description: A chained equality inference, useful for converting from definitions. (Contributed by Mario Carneiro, 6-Nov-2015.) |
Ref | Expression |
---|---|
3eqtr3a.1 | ⊢ 𝐴 = 𝐵 |
3eqtr3a.2 | ⊢ (𝜑 → 𝐴 = 𝐶) |
3eqtr3a.3 | ⊢ (𝜑 → 𝐵 = 𝐷) |
Ref | Expression |
---|---|
3eqtr3a | ⊢ (𝜑 → 𝐶 = 𝐷) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3eqtr3a.2 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) | |
2 | 3eqtr3a.1 | . . 3 ⊢ 𝐴 = 𝐵 | |
3 | 3eqtr3a.3 | . . 3 ⊢ (𝜑 → 𝐵 = 𝐷) | |
4 | 2, 3 | syl5eq 2868 | . 2 ⊢ (𝜑 → 𝐴 = 𝐷) |
5 | 1, 4 | eqtr3d 2858 | 1 ⊢ (𝜑 → 𝐶 = 𝐷) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1533 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-9 2120 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1777 df-cleq 2814 |
This theorem is referenced by: uneqin 4254 coi2 6115 foima 6594 f1imacnv 6630 fvsnun1 6943 fnsnsplit 6945 phplem4 8698 php3 8702 rankopb 9280 fin4en1 9730 fpwwe2 10064 winacard 10113 mul02lem1 10815 cnegex2 10821 crreczi 13588 hashinf 13694 hashcard 13715 cshw0 14155 cshwn 14158 sqrtneglem 14625 rlimresb 14921 bpoly3 15411 bpoly4 15412 sinhval 15506 coshval 15507 absefib 15550 efieq1re 15551 sadcaddlem 15805 sadaddlem 15814 psgnsn 18647 odngen 18701 frlmup3 20943 mat0op 21027 restopnb 21782 cnmpt2t 22280 clmnegneg 23707 ncvspi 23759 volsup2 24205 plypf1 24801 pige3ALT 25104 sineq0 25108 eflog 25159 logef 25164 cxpsqrt 25285 dvcncxp1 25323 cubic2 25425 quart1 25433 asinsinlem 25468 asinsin 25469 2efiatan 25495 pclogsum 25790 lgsneg 25896 vc0 28350 vcm 28352 nvpi 28443 honegneg 29582 opsqrlem6 29921 sto1i 30012 mdexchi 30111 cnre2csqlem 31153 itgexpif 31877 subfacp1lem1 32426 rankaltopb 33440 poimirlem23 34914 dvtan 34941 dvasin 34977 heiborlem6 35093 trlcoat 37858 cdlemk54 38093 resubid 39236 iocunico 39815 relintab 39941 rfovcnvf1od 40348 ntrneifv3 40430 ntrneifv4 40433 clsneifv3 40458 clsneifv4 40459 neicvgfv 40469 snunioo1 41786 dvsinexp 42193 itgsubsticclem 42258 stirlinglem1 42358 fourierdlem80 42470 fourierdlem111 42501 sqwvfoura 42512 sqwvfourb 42513 fouriersw 42515 aacllem 44901 |
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