![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > sylan9eq | GIF version |
Description: An equality transitivity deduction. (Contributed by NM, 8-May-1994.) (Proof shortened by Andrew Salmon, 25-May-2011.) |
Ref | Expression |
---|---|
sylan9eq.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
sylan9eq.2 | ⊢ (𝜓 → 𝐵 = 𝐶) |
Ref | Expression |
---|---|
sylan9eq | ⊢ ((𝜑 ∧ 𝜓) → 𝐴 = 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sylan9eq.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
2 | sylan9eq.2 | . 2 ⊢ (𝜓 → 𝐵 = 𝐶) | |
3 | eqtr 2158 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐵 = 𝐶) → 𝐴 = 𝐶) | |
4 | 1, 2, 3 | syl2an 287 | 1 ⊢ ((𝜑 ∧ 𝜓) → 𝐴 = 𝐶) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 = 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: sylan9req 2194 sylan9eqr 2195 difeq12 3194 uneq12 3230 ineq12 3277 ifeq12 3493 preq12 3610 prprc 3641 preq12b 3705 opeq12 3715 xpeq12 4566 nfimad 4898 coi2 5063 funimass1 5208 f1orescnv 5391 resdif 5397 oveq12 5791 cbvmpov 5859 ovmpog 5913 eqopi 6078 fmpoco 6121 nnaordex 6431 map0g 6590 xpcomco 6728 xpmapenlem 6751 phplem3 6756 phplem4 6757 sbthlemi5 6857 addcmpblnq 7199 ltrnqg 7252 enq0ref 7265 addcmpblnq0 7275 distrlem4prl 7416 distrlem4pru 7417 recexgt0sr 7605 axcnre 7713 cnegexlem2 7962 cnegexlem3 7963 recexap 8438 xaddpnf2 9660 xaddmnf2 9662 rexadd 9665 xaddnemnf 9670 xaddnepnf 9671 xposdif 9695 frec2uzrand 10209 seqeq3 10254 shftcan1 10638 remul2 10677 immul2 10684 ef0lem 11403 efieq1re 11514 dvdsnegb 11546 dvdscmul 11556 dvds2ln 11562 dvds2add 11563 dvds2sub 11564 gcdn0val 11686 rpmulgcd 11750 lcmval 11780 lcmn0val 11783 isopn3 12333 dvexp 12883 dvexp2 12884 subctctexmid 13369 |
Copyright terms: Public domain | W3C validator |