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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 3000 | 1 ⊢ (𝐴 = 𝐵 → (𝐶 ≠ 𝐴 ↔ 𝐶 ≠ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 = wceq 1541 ≠ wne 2939 |
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 1913 ax-6 1971 ax-7 2011 ax-9 2116 ax-ext 2702 |
This theorem depends on definitions: df-bi 206 df-an 397 df-ex 1782 df-cleq 2723 df-ne 2940 |
This theorem is referenced by: psseq2 4053 prproe 4868 fprg 7106 f1dom3el3dif 7221 f1prex 7235 xpord2lem 8079 xpord3lem 8086 dfac5 10073 kmlem4 10098 kmlem14 10108 1re 11164 hashge2el2difr 14392 hashdmpropge2 14394 dvdsle 16203 sgrp2rid2ex 18751 isirred 20144 isnzr2 20207 dmatelnd 21882 mdetdiaglem 21984 mdetunilem1 21998 mdetunilem2 21999 maducoeval2 22026 hausnei 22716 regr1lem2 23128 xrhmeo 24346 axtg5seg 27470 axtgupdim2 27476 axtgeucl 27477 ishlg 27607 tglnpt2 27646 axlowdim1 27971 umgrvad2edg 28224 2pthdlem1 28938 3pthdlem1 29171 upgr3v3e3cycl 29187 upgr4cycl4dv4e 29192 eupth2lem3lem4 29238 3cyclfrgrrn1 29292 4cycl2vnunb 29297 numclwwlkovh 29380 numclwwlkovq 29381 numclwwlk2lem1 29383 numclwlk2lem2f 29384 superpos 31359 signswch 33262 axtgupdim2ALTV 33370 dfrdg4 34612 fvray 34802 linedegen 34804 fvline 34805 linethru 34814 hilbert1.1 34815 knoppndvlem21 35071 poimirlem1 36152 hlsuprexch 37917 3dim1lem5 38002 llni2 38048 lplni2 38073 2llnjN 38103 lvoli2 38117 2lplnj 38156 islinei 38276 cdleme40n 39004 cdlemg33b 39243 ax6e2ndeq 42963 ax6e2ndeqVD 43313 ax6e2ndeqALT 43335 refsum2cnlem1 43364 stoweidlem43 44404 nnfoctbdjlem 44816 elprneb 45383 ichnreuop 45784 inlinecirc02plem 46992 |
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