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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 3076 | 1 ⊢ (𝐴 = 𝐵 → (𝐶 ≠ 𝐴 ↔ 𝐶 ≠ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 = wceq 1537 ≠ wne 3016 |
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 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1781 df-cleq 2814 df-ne 3017 |
This theorem is referenced by: psseq2 4065 prproe 4836 fprg 6917 f1dom3el3dif 7027 f1prex 7040 dfac5 9554 kmlem4 9579 kmlem14 9589 1re 10641 hashge2el2difr 13840 hashdmpropge2 13842 dvdsle 15660 sgrp2rid2ex 18092 isirred 19449 isnzr2 20036 dmatelnd 21105 mdetdiaglem 21207 mdetunilem1 21221 mdetunilem2 21222 maducoeval2 21249 hausnei 21936 regr1lem2 22348 xrhmeo 23550 axtg5seg 26251 axtgupdim2 26257 axtgeucl 26258 ishlg 26388 tglnpt2 26427 axlowdim1 26745 umgrvad2edg 26995 2pthdlem1 27709 3pthdlem1 27943 upgr3v3e3cycl 27959 upgr4cycl4dv4e 27964 eupth2lem3lem4 28010 3cyclfrgrrn1 28064 4cycl2vnunb 28069 numclwwlkovh 28152 numclwwlkovq 28153 numclwwlk2lem1 28155 numclwlk2lem2f 28156 superpos 30131 signswch 31831 axtgupdim2ALTV 31939 dfrdg4 33412 fvray 33602 linedegen 33604 fvline 33605 linethru 33614 hilbert1.1 33615 knoppndvlem21 33871 poimirlem1 34908 hlsuprexch 36532 3dim1lem5 36617 llni2 36663 lplni2 36688 2llnjN 36718 lvoli2 36732 2lplnj 36771 islinei 36891 cdleme40n 37619 cdlemg33b 37858 ax6e2ndeq 40913 ax6e2ndeqVD 41263 ax6e2ndeqALT 41285 refsum2cnlem1 41314 stoweidlem43 42348 nnfoctbdjlem 42757 elprneb 43284 ichnreuop 43654 inlinecirc02plem 44793 |
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