| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > necon3bii | Structured version Visualization version GIF version | ||
| Description: Inference from equality to inequality. (Contributed by NM, 23-Feb-2005.) |
| Ref | Expression |
|---|---|
| necon3bii.1 | ⊢ (𝐴 = 𝐵 ↔ 𝐶 = 𝐷) |
| Ref | Expression |
|---|---|
| necon3bii | ⊢ (𝐴 ≠ 𝐵 ↔ 𝐶 ≠ 𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | necon3bii.1 | . . 3 ⊢ (𝐴 = 𝐵 ↔ 𝐶 = 𝐷) | |
| 2 | 1 | necon3abii 3002 | . 2 ⊢ (𝐴 ≠ 𝐵 ↔ ¬ 𝐶 = 𝐷) |
| 3 | df-ne 2957 | . 2 ⊢ (𝐶 ≠ 𝐷 ↔ ¬ 𝐶 = 𝐷) | |
| 4 | 2, 3 | bitr4i 280 | 1 ⊢ (𝐴 ≠ 𝐵 ↔ 𝐶 ≠ 𝐷) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ↔ wb 208 = wceq 1559 ≠ wne 2956 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This theorem depends on definitions: df-bi 209 df-ne 2957 |
| This theorem is referenced by: necom 3009 neeq1i 3020 neeq2i 3021 neeq12i 3022 rnsnn0 6191 onoviun 8309 onnseq 8310 intrnfi 9359 wdomtr 9520 noinfep 9612 wemapwe 9649 scott0s 9843 cplem1 9844 karden 9850 acndom2 10007 dfac5lem3 10078 fin23lem31 10297 fin23lem40 10305 isf34lem5 10332 isf34lem7 10333 isf34lem6 10334 axrrecex 11118 negne0bi 11501 rpnnen1lem4 12978 rpnnen1lem5 12979 fseqsupcl 13987 limsupgre 15491 isercolllem3 15677 rpnnen2lem12 16240 ruclem11 16255 3dvds 16348 prmreclem6 16940 0ram 17039 0ram2 17040 0ramcl 17042 gsumval2 18703 ghmrn 19252 gexex 19876 gsumval3 19930 subdrgint 20832 iinopn 22942 cnconn 23462 1stcfb 23485 qtopeu 23756 fbasrn 23924 alexsublem 24084 evth 25001 minveclem1 25466 minveclem3b 25470 ovollb2 25531 ovolunlem1a 25538 ovolunlem1 25539 ovoliunlem1 25544 ovoliun2 25548 ioombl1lem4 25603 uniioombllem1 25623 uniioombllem2 25625 uniioombllem6 25630 mbfsup 25706 mbfinf 25707 mbflimsup 25708 itg1climres 25756 itg2monolem1 25792 itg2mono 25795 itg2i1fseq2 25798 sincos4thpi 26555 nosepnelem 27720 axlowdimlem13 29101 eulerpath 30389 siii 31002 minvecolem1 31023 bcsiALT 31328 h1de2bi 31703 h1de2ctlem 31704 nmlnopgt0i 32146 wrdpmtrlast 33234 dimval 33859 dimvalfi 33860 rge0scvg 34207 umgracycusgr 35468 cusgracyclt3v 35470 erdszelem5 35509 cvmsss2 35588 elrn3 36076 rankeq1o 36485 ttc0elw 36851 ttc0el 36859 regsfromunir1 36864 fin2so 38070 heicant 38118 scottn0f 38633 psspwb 42811 fnwe2lem2 43592 sqrtcval 44181 |
| Copyright terms: Public domain | W3C validator |