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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 | eqtrid 2812 | . 2 ⊢ (𝜑 → 𝐴 = 𝐷) |
| 5 | 1, 4 | eqtr3d 2802 | 1 ⊢ (𝜑 → 𝐶 = 𝐷) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = 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 2156 ax-ext 2737 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2757 |
| This theorem is used by: uneqin 4242 coi2 6267 foima 6801 f1imacnv 6841 fvsnun1 7186 fnsnsplit 7188 phplem2 9196 php3 9200 rankopb 9831 fin4en1 10308 fpwwe2 10643 winacard 10692 mul02lem1 11401 cnegex2 11407 crreczi 14282 hashinf 14389 hashcard 14409 cshw0 14855 cshwn 14858 sqrtneglem 15341 rlimresb 15640 bpoly3 16134 bpoly4 16135 sinhval 16232 coshval 16233 absefib 16276 efieq1re 16277 sadcaddlem 16537 sadaddlem 16546 qus0subgbas 19313 psgnsn 19634 odngen 19691 frlmup3 22000 mat0op 22626 restopnb 23382 cnmpt2t 23881 clmnegneg 25314 ncvspi 25366 volsup2 25815 plypf1 26420 pige3ALT 26736 sineq0 26740 eflog 26792 logef 26797 cxpsqrt 26919 dvcncxp1 26959 cubic2 27064 quart1 27072 asinsinlem 27107 asinsin 27108 2efiatan 27134 pclogsum 27430 lgsneg 27536 bdayfinbndlem1 28711 vc0 30997 vcm 30999 nvpi 31090 honegneg 32229 opsqrlem6 32568 sto1i 32659 mdexchi 32758 fmptunsnop 33116 preiman0 33126 elrspunidl 33800 cnre2csqlem 34364 itgexpif 35058 subfacp1lem1 35708 rankaltopb 36508 poimirlem23 38351 dvtan 38378 dvasin 38412 heiborlem6 38525 trlcoat 41555 cdlemk54 41790 readvcot 43183 resubid 43228 sn-mul02 43284 iocunico 43996 relintab 44367 rfovcnvf1od 44788 ntrneifv3 44866 ntrneifv4 44869 clsneifv3 44894 clsneifv4 44895 neicvgfv 44905 snunioo1 46286 dvsinexp 46683 dvnprodlem1 46718 itgsubsticclem 46747 stirlinglem1 46846 fourierdlem80 46958 fourierdlem111 46989 sqwvfoura 47000 sqwvfourb 47001 fouriersw 47003 saliinclf 47098 smfco 47574 2oppf 49967 aacllem 50678 |
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