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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 3047 | 1 ⊢ (𝐴 = 𝐵 → (𝐶 ≠ 𝐴 ↔ 𝐶 ≠ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 = wceq 1538 ≠ wne 2987 |
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 df-ne 2988 |
This theorem is referenced by: psseq2 4016 prproe 4798 fprg 6894 f1dom3el3dif 7005 f1prex 7018 dfac5 9539 kmlem4 9564 kmlem14 9574 1re 10630 hashge2el2difr 13835 hashdmpropge2 13837 dvdsle 15652 sgrp2rid2ex 18084 isirred 19445 isnzr2 20029 dmatelnd 21101 mdetdiaglem 21203 mdetunilem1 21217 mdetunilem2 21218 maducoeval2 21245 hausnei 21933 regr1lem2 22345 xrhmeo 23551 axtg5seg 26259 axtgupdim2 26265 axtgeucl 26266 ishlg 26396 tglnpt2 26435 axlowdim1 26753 umgrvad2edg 27003 2pthdlem1 27716 3pthdlem1 27949 upgr3v3e3cycl 27965 upgr4cycl4dv4e 27970 eupth2lem3lem4 28016 3cyclfrgrrn1 28070 4cycl2vnunb 28075 numclwwlkovh 28158 numclwwlkovq 28159 numclwwlk2lem1 28161 numclwlk2lem2f 28162 superpos 30137 signswch 31941 axtgupdim2ALTV 32049 dfrdg4 33525 fvray 33715 linedegen 33717 fvline 33718 linethru 33727 hilbert1.1 33728 knoppndvlem21 33984 poimirlem1 35058 hlsuprexch 36677 3dim1lem5 36762 llni2 36808 lplni2 36833 2llnjN 36863 lvoli2 36877 2lplnj 36916 islinei 37036 cdleme40n 37764 cdlemg33b 38003 ax6e2ndeq 41265 ax6e2ndeqVD 41615 ax6e2ndeqALT 41637 refsum2cnlem1 41666 stoweidlem43 42685 nnfoctbdjlem 43094 elprneb 43621 ichnreuop 43989 inlinecirc02plem 45200 |
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