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Mirrors > Home > MPE Home > Th. List > neeq2 | Structured version Visualization version GIF version |
Description: Equality theorem for inequality. (Contributed by NM, 19-Nov-1994.) (Proof shortened by Wolf Lammen, 18-Nov-2019.) |
Ref | Expression |
---|---|
neeq2 | ⊢ (𝐴 = 𝐵 → (𝐶 ≠ 𝐴 ↔ 𝐶 ≠ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . 2 ⊢ (𝐴 = 𝐵 → 𝐴 = 𝐵) | |
2 | 1 | neeq2d 3078 | 1 ⊢ (𝐴 = 𝐵 → (𝐶 ≠ 𝐴 ↔ 𝐶 ≠ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 = wceq 1537 ≠ wne 3018 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-9 2124 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1781 df-cleq 2816 df-ne 3019 |
This theorem is referenced by: psseq2 4067 prproe 4838 fprg 6919 f1dom3el3dif 7029 f1prex 7042 dfac5 9556 kmlem4 9581 kmlem14 9591 1re 10643 hashge2el2difr 13842 hashdmpropge2 13844 dvdsle 15662 sgrp2rid2ex 18094 isirred 19451 isnzr2 20038 dmatelnd 21107 mdetdiaglem 21209 mdetunilem1 21223 mdetunilem2 21224 maducoeval2 21251 hausnei 21938 regr1lem2 22350 xrhmeo 23552 axtg5seg 26253 axtgupdim2 26259 axtgeucl 26260 ishlg 26390 tglnpt2 26429 axlowdim1 26747 umgrvad2edg 26997 2pthdlem1 27711 3pthdlem1 27945 upgr3v3e3cycl 27961 upgr4cycl4dv4e 27966 eupth2lem3lem4 28012 3cyclfrgrrn1 28066 4cycl2vnunb 28071 numclwwlkovh 28154 numclwwlkovq 28155 numclwwlk2lem1 28157 numclwlk2lem2f 28158 superpos 30133 signswch 31833 axtgupdim2ALTV 31941 dfrdg4 33414 fvray 33604 linedegen 33606 fvline 33607 linethru 33616 hilbert1.1 33617 knoppndvlem21 33873 poimirlem1 34895 hlsuprexch 36519 3dim1lem5 36604 llni2 36650 lplni2 36675 2llnjN 36705 lvoli2 36719 2lplnj 36758 islinei 36878 cdleme40n 37606 cdlemg33b 37845 ax6e2ndeq 40900 ax6e2ndeqVD 41250 ax6e2ndeqALT 41272 refsum2cnlem1 41301 stoweidlem43 42335 nnfoctbdjlem 42744 elprneb 43271 ichnreuop 43641 inlinecirc02plem 44780 |
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