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| Mirrors > Home > MPE Home > Th. List > neeqtrd | Structured version Visualization version GIF version | ||
| Description: Substitution of equal classes into an inequality. (Contributed by NM, 4-Jul-2012.) |
| Ref | Expression |
|---|---|
| neeqtrd.1 | ⊢ (𝜑 → 𝐴 ≠ 𝐵) |
| neeqtrd.2 | ⊢ (𝜑 → 𝐵 = 𝐶) |
| Ref | Expression |
|---|---|
| neeqtrd | ⊢ (𝜑 → 𝐴 ≠ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | neeqtrd.1 | . 2 ⊢ (𝜑 → 𝐴 ≠ 𝐵) | |
| 2 | neeqtrd.2 | . . 3 ⊢ (𝜑 → 𝐵 = 𝐶) | |
| 3 | 2 | neeq2d 3015 | . 2 ⊢ (𝜑 → (𝐴 ≠ 𝐵 ↔ 𝐴 ≠ 𝐶)) |
| 4 | 1, 3 | mpbid 235 | 1 ⊢ (𝜑 → 𝐴 ≠ 𝐶) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ≠ wne 2955 |
| 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 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2752 df-ne 2956 |
| This theorem is used by: neeqtrrd 3029 3netr3d 3031 xaddass2 13305 xov1plusxeqvd 13554 smndex2dnrinv 19030 ablsimpgfindlem1 20239 issubdrg 20949 0ringprmidl 21543 qsssubdrg 21642 ply1scln0 22520 alexsublem 24273 cphsubrglem 25408 cphreccllem 25409 mdegldg 26294 nosep2o 27921 noetainflem4 27979 tglinethru 28986 footexALT 29075 footexlem2 29077 lnssplng 29152 nrt2irr 30956 sdrgdvcl 33743 sdrginvcl 33744 0ringmon1p 33970 irngnzply1lem 34203 irngnminplynz 34225 minplym1p 34226 minplynzm1p 34227 algextdeglem4 34233 poimirlem26 38398 lkrpssN 40039 lnatexN 40655 lhpexle2lem 40885 lhpexle3lem 40887 cdlemg47 41612 cdlemk54 41834 tendoinvcl 41980 lcdlkreqN 42498 mapdh8ab 42653 aks6d1c5lem2 43007 aks6d1c7 43053 jm2.26lem3 43845 stoweidlem36 46867 addmodne 48241 p1modne 48244 m1modne 48245 minusmod5ne 48246 gpg5nbgrvtx03starlem2 48988 gpg5nbgrvtx13starlem2 48991 gpg5edgnedg 49049 |
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