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Mirrors > Home > ILE Home > Th. List > 3eqtr4rd | GIF version |
Description: A deduction from three chained equalities. (Contributed by NM, 21-Sep-1995.) |
Ref | Expression |
---|---|
3eqtr4d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
3eqtr4d.2 | ⊢ (𝜑 → 𝐶 = 𝐴) |
3eqtr4d.3 | ⊢ (𝜑 → 𝐷 = 𝐵) |
Ref | Expression |
---|---|
3eqtr4rd | ⊢ (𝜑 → 𝐷 = 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3eqtr4d.3 | . . 3 ⊢ (𝜑 → 𝐷 = 𝐵) | |
2 | 3eqtr4d.1 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
3 | 1, 2 | eqtr4d 2176 | . 2 ⊢ (𝜑 → 𝐷 = 𝐴) |
4 | 3eqtr4d.2 | . 2 ⊢ (𝜑 → 𝐶 = 𝐴) | |
5 | 3, 4 | eqtr4d 2176 | 1 ⊢ (𝜑 → 𝐷 = 𝐶) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1332 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1424 ax-gen 1426 ax-4 1488 ax-17 1507 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-cleq 2133 |
This theorem is referenced by: csbcnvg 4731 fvco4 5501 phplem4 6757 phplem4on 6769 omp1eomlem 6987 ctssdclemn0 7003 recexnq 7222 prarloclemcalc 7334 addcomprg 7410 mulcomprg 7412 mulcmpblnrlemg 7572 axmulass 7705 divnegap 8490 modqlt 10137 modqmulnn 10146 seq3val 10262 seqvalcd 10263 seq3caopr3 10285 seq3f1olemqsumkj 10302 seq3f1olemqsumk 10303 seq3f1olemqsum 10304 seq3f1o 10308 bcval5 10541 omgadd 10580 seq3coll 10617 cjreb 10670 recj 10671 imcj 10679 imval2 10698 resqrexlemover 10814 sqrtmul 10839 amgm2 10922 maxabslemab 11010 xrmaxadd 11062 summodclem2a 11182 fsumf1o 11191 sumsnf 11210 sumsplitdc 11233 fsummulc2 11249 binom 11285 bcxmas 11290 expcnvap0 11303 expcnv 11305 cvgratnnlemnexp 11325 cvgratnnlemmn 11326 prodmodclem3 11376 fprodseq 11384 ege2le3 11414 efaddlem 11417 eftlub 11433 tanval3ap 11457 tannegap 11471 cosmul 11488 cos01bnd 11501 demoivreALT 11516 flodddiv4 11667 dfgcd3 11734 absmulgcd 11741 sqpweven 11889 2sqpwodd 11890 crth 11936 ctiunctlemfo 11988 setsslnid 12049 txbasval 12475 rplogbchbase 13075 |
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