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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 2845 | . 2 ⊢ (𝜑 → 𝐴 = 𝐷) |
5 | 1, 4 | eqtr3d 2835 | 1 ⊢ (𝜑 → 𝐶 = 𝐷) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1538 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-9 2121 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-ex 1782 df-cleq 2791 |
This theorem is referenced by: uneqin 4205 coi2 6083 foima 6570 f1imacnv 6606 fvsnun1 6921 fnsnsplit 6923 phplem4 8683 php3 8687 rankopb 9265 fin4en1 9720 fpwwe2 10054 winacard 10103 mul02lem1 10805 cnegex2 10811 crreczi 13585 hashinf 13691 hashcard 13712 cshw0 14147 cshwn 14150 sqrtneglem 14618 rlimresb 14914 bpoly3 15404 bpoly4 15405 sinhval 15499 coshval 15500 absefib 15543 efieq1re 15544 sadcaddlem 15796 sadaddlem 15805 psgnsn 18640 odngen 18694 frlmup3 20489 mat0op 21024 restopnb 21780 cnmpt2t 22278 clmnegneg 23709 ncvspi 23761 volsup2 24209 plypf1 24809 pige3ALT 25112 sineq0 25116 eflog 25168 logef 25173 cxpsqrt 25294 dvcncxp1 25332 cubic2 25434 quart1 25442 asinsinlem 25477 asinsin 25478 2efiatan 25504 pclogsum 25799 lgsneg 25905 vc0 28357 vcm 28359 nvpi 28450 honegneg 29589 opsqrlem6 29928 sto1i 30019 mdexchi 30118 preiman0 30469 elrspunidl 31014 cnre2csqlem 31263 itgexpif 31987 subfacp1lem1 32539 rankaltopb 33553 poimirlem23 35080 dvtan 35107 dvasin 35141 heiborlem6 35254 trlcoat 38019 cdlemk54 38254 resubid 39546 sn-mul02 39577 iocunico 40161 relintab 40283 rfovcnvf1od 40705 ntrneifv3 40785 ntrneifv4 40788 clsneifv3 40813 clsneifv4 40814 neicvgfv 40824 snunioo1 42149 dvsinexp 42553 itgsubsticclem 42617 stirlinglem1 42716 fourierdlem80 42828 fourierdlem111 42859 sqwvfoura 42870 sqwvfourb 42871 fouriersw 42873 aacllem 45329 |
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