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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 2810 | . 2 ⊢ (𝜑 → 𝐴 = 𝐷) |
| 5 | 1, 4 | eqtr3d 2800 | 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 1945 ax-6 2002 ax-7 2043 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2755 |
| This theorem is used by: uneqin 4237 coi2 6286 foima 6831 f1imacnv 6871 fvsnun1 7218 fnsnsplit 7220 phplem2 9258 php3 9262 rankopb 9903 fin4en1 10426 fpwwe2 10767 winacard 10816 mul02lem1 11525 cnegex2 11531 crreczi 14413 hashinf 14520 hashcard 14540 cshw0 14987 cshwn 14990 sqrtneglem 15476 rlimresb 15776 bpoly3 16268 bpoly4 16269 sinhval 16366 coshval 16367 absefib 16410 efieq1re 16411 sadcaddlem 16671 sadaddlem 16680 qus0subgbas 19463 psgnsn 19785 odngen 19842 frlmup3 22161 mat0op 22789 restopnb 23548 cnmpt2t 24047 clmnegneg 25480 ncvspi 25532 volsup2 25981 plypf1 26586 pige3ALT 26905 sineq0 26909 eflog 26961 logef 26966 cxpsqrt 27088 dvcncxp1 27128 cubic2 27233 quart1 27241 asinsinlem 27276 asinsin 27277 2efiatan 27303 pclogsum 27599 lgsneg 27705 bdayfinbndlem1 28910 vc0 31233 vcm 31235 nvpi 31326 honegneg 32465 opsqrlem6 32804 sto1i 32895 mdexchi 32994 fmptunsnop 33390 preiman0 33400 elrspunidl 34082 cnre2csqlem 34653 itgexpif 35346 subfacp1lem1 36152 rankaltopb 36959 poimirlem23 38829 dvtan 38856 dvasin 38890 heiborlem6 39016 trlcoat 42046 cdlemk54 42281 readvcot 43681 resubid 43726 sn-mul02 43782 iocunico 44474 relintab 44845 rfovcnvf1od 45265 ntrneifv3 45343 ntrneifv4 45346 clsneifv3 45371 clsneifv4 45372 neicvgfv 45382 snunioo1 46797 dvsinexp 47194 dvnprodlem1 47229 itgsubsticclem 47258 stirlinglem1 47357 fourierdlem80 47469 fourierdlem111 47500 sqwvfoura 47511 sqwvfourb 47512 fouriersw 47514 saliinclf 47609 smfco 48085 2oppf 50579 aacllem 51367 |
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