| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > necon3bbid | Structured version Visualization version GIF version | ||
| Description: Deduction from equality to inequality. (Contributed by NM, 2-Jun-2007.) |
| Ref | Expression |
|---|---|
| necon3bbid.1 | ⊢ (𝜑 → (𝜓 ↔ 𝐴 = 𝐵)) |
| Ref | Expression |
|---|---|
| necon3bbid | ⊢ (𝜑 → (¬ 𝜓 ↔ 𝐴 ≠ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | necon3bbid.1 | . . . 4 ⊢ (𝜑 → (𝜓 ↔ 𝐴 = 𝐵)) | |
| 2 | 1 | bicomd 226 | . . 3 ⊢ (𝜑 → (𝐴 = 𝐵 ↔ 𝜓)) |
| 3 | 2 | necon3abid 2993 | . 2 ⊢ (𝜑 → (𝐴 ≠ 𝐵 ↔ ¬ 𝜓)) |
| 4 | 3 | bicomd 226 | 1 ⊢ (𝜑 → (¬ 𝜓 ↔ 𝐴 ≠ 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 = wceq 1570 ≠ wne 2957 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This proof depends on definitions: df-bi 210 df-ne 2958 |
| This theorem is used by: necon1abid 2995 necon3bid 3001 eldifsn 4751 php 9204 xmullem2 13319 fzdif1 13662 seqcoll2 14532 sgnneg 15175 cnpart 15329 rlimrecl 15669 ncoprmgcdne1b 16744 prmrp 16807 4sqlem17 17057 mrieqvd 17730 mrieqv2d 17731 pltval 18422 latnlemlt 18564 latnle 18565 degenmgm2nfun 19056 odnncl 19676 gexnnod 19719 sylow1lem1 19729 slwpss 19743 lssnle 19805 nzrunit 20689 isdrng4 20906 imadrhmcl 20967 lspsnne1 21308 pridln1 21535 cnsubrg 21644 psrridm 22181 mhpmulcl 22381 cmpfi 23637 hausdiag 23875 txhaus 23877 isusp 24491 recld2 25045 metdseq0 25085 i1f1lem 25921 aaliou2b 26577 dvloglem 26886 logf1o2 26888 lgsne0 27572 lgsqr 27588 2sqlem7 27661 ostth3 27875 tglngne 28893 tgelrnln 28978 eucrct2eupth 30726 norm1exi 31732 atnemeq0 32859 opeldifid 33074 arginv 33220 unitnz 33680 mxidln1 33871 ssmxidllem 33878 rprmnz 33932 ply1unit 33987 ply1dg3rt0irred 33996 constrrtll 34243 qtophaus 34348 ordtconnlem1 34436 elzrhunit 34489 subfacp1lem6 35766 maxidln1 38796 smprngopr 38804 lsatnem0 39920 atncmp 40187 atncvrN 40190 cdlema2N 40667 lhpmatb 40906 lhpat3 40921 cdleme3 41112 cdleme7 41124 cdlemg27b 41571 dvh2dimatN 42315 dvh2dim 42320 dochexmidlem1 42335 dochfln0 42352 dvrelog2b 42934 aks6d1c2p2 42987 hashscontpow 42990 rspcsbnea 42999 nna4b4nsq 43508 |
| Copyright terms: Public domain | W3C validator |