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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 6110 foima 6589 f1imacnv 6625 fvsnun1 6938 fnsnsplit 6940 phplem4 8693 php3 8697 rankopb 9275 fin4en1 9725 fpwwe2 10059 winacard 10108 mul02lem1 10810 cnegex2 10816 crreczi 13583 hashinf 13689 hashcard 13710 cshw0 14150 cshwn 14153 sqrtneglem 14620 rlimresb 14916 bpoly3 15406 bpoly4 15407 sinhval 15501 coshval 15502 absefib 15545 efieq1re 15546 sadcaddlem 15800 sadaddlem 15809 psgnsn 18642 odngen 18696 frlmup3 20938 mat0op 21022 restopnb 21777 cnmpt2t 22275 clmnegneg 23702 ncvspi 23754 volsup2 24200 plypf1 24796 pige3ALT 25099 sineq0 25103 eflog 25154 logef 25159 cxpsqrt 25280 dvcncxp1 25318 cubic2 25420 quart1 25428 asinsinlem 25463 asinsin 25464 2efiatan 25490 pclogsum 25785 lgsneg 25891 vc0 28345 vcm 28347 nvpi 28438 honegneg 29577 opsqrlem6 29916 sto1i 30007 mdexchi 30106 cnre2csqlem 31148 itgexpif 31872 subfacp1lem1 32421 rankaltopb 33435 poimirlem23 34909 dvtan 34936 dvasin 34972 heiborlem6 35088 trlcoat 37853 cdlemk54 38088 resubid 39231 iocunico 39810 relintab 39936 rfovcnvf1od 40343 ntrneifv3 40425 ntrneifv4 40428 clsneifv3 40453 clsneifv4 40454 neicvgfv 40464 snunioo1 41781 dvsinexp 42188 itgsubsticclem 42253 stirlinglem1 42353 fourierdlem80 42465 fourierdlem111 42496 sqwvfoura 42507 sqwvfourb 42508 fouriersw 42510 aacllem 44896 |
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