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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 2808 | . 2 ⊢ (𝜑 → 𝐴 = 𝐷) |
| 5 | 1, 4 | eqtr3d 2798 | 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 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: uneqin 4235 coi2 6264 foima 6799 f1imacnv 6839 fvsnun1 7185 fnsnsplit 7187 phplem2 9213 php3 9217 rankopb 9859 fin4en1 10380 fpwwe2 10721 winacard 10770 mul02lem1 11479 cnegex2 11485 crreczi 14365 hashinf 14472 hashcard 14492 cshw0 14938 cshwn 14941 sqrtneglem 15426 rlimresb 15725 bpoly3 16217 bpoly4 16218 sinhval 16315 coshval 16316 absefib 16359 efieq1re 16360 sadcaddlem 16620 sadaddlem 16629 qus0subgbas 19406 psgnsn 19727 odngen 19784 frlmup3 22099 mat0op 22727 restopnb 23486 cnmpt2t 23985 clmnegneg 25418 ncvspi 25470 volsup2 25919 plypf1 26524 pige3ALT 26841 sineq0 26845 eflog 26897 logef 26902 cxpsqrt 27024 dvcncxp1 27064 cubic2 27169 quart1 27177 asinsinlem 27212 asinsin 27213 2efiatan 27239 pclogsum 27535 lgsneg 27641 bdayfinbndlem1 28846 vc0 31169 vcm 31171 nvpi 31262 honegneg 32401 opsqrlem6 32740 sto1i 32831 mdexchi 32930 fmptunsnop 33286 preiman0 33296 elrspunidl 33971 cnre2csqlem 34535 itgexpif 35228 subfacp1lem1 35923 rankaltopb 36724 poimirlem23 38541 dvtan 38568 dvasin 38602 heiborlem6 38730 trlcoat 41760 cdlemk54 41995 readvcot 43395 resubid 43440 sn-mul02 43496 iocunico 44197 relintab 44568 rfovcnvf1od 44989 ntrneifv3 45067 ntrneifv4 45070 clsneifv3 45095 clsneifv4 45096 neicvgfv 45106 snunioo1 46493 dvsinexp 46890 dvnprodlem1 46925 itgsubsticclem 46954 stirlinglem1 47053 fourierdlem80 47165 fourierdlem111 47196 sqwvfoura 47207 sqwvfourb 47208 fouriersw 47210 saliinclf 47305 smfco 47781 2oppf 50209 aacllem 50908 |
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