| 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 2991 | . 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 1569 ≠ wne 2955 |
| 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 2956 |
| This theorem is used by: necon1abid 2993 necon3bid 2999 eldifsn 4747 php 9223 xmullem2 13396 fzdif1 13740 seqcoll2 14611 sgnneg 15254 cnpart 15408 rlimrecl 15748 ncoprmgcdne1b 16826 prmrp 16889 4sqlem17 17140 mrieqvd 17813 mrieqv2d 17814 pltval 18505 latnlemlt 18647 latnle 18648 degenmgm2nfun 19140 odnncl 19760 gexnnod 19803 sylow1lem1 19813 slwpss 19827 lssnle 19889 nzrunit 20776 isdrng4 20993 imadrhmcl 21055 lspsnne1 21396 pridln1 21625 cnsubrg 21734 psrridm 22271 mhpmulcl 22471 cmpfi 23727 hausdiag 23965 txhaus 23967 isusp 24581 recld2 25135 metdseq0 25175 i1f1lem 26011 aaliou2b 26669 dvloglem 26977 logf1o2 26979 lgsne0 27663 lgsqr 27679 2sqlem7 27752 ostth3 27966 tglngne 29014 tgelrnln 29099 eucrct2eupth 30847 norm1exi 31853 atnemeq0 32980 opeldifid 33236 arginv 33382 unitnz 33842 mxidln1 34034 ssmxidllem 34041 rprmnz 34095 ply1unit 34150 ply1dg3rt0irred 34159 constrrtll 34406 qtophaus 34511 ordtconnlem1 34599 elzrhunit 34652 subfacp1lem6 36019 maxidln1 39054 smprngopr 39062 lsatnem0 40178 atncmp 40445 atncvrN 40448 cdlema2N 40925 lhpmatb 41164 lhpat3 41179 cdleme3 41370 cdleme7 41382 cdlemg27b 41829 dvh2dimatN 42573 dvh2dim 42578 dochexmidlem1 42593 dochfln0 42610 dvrelog2b 43192 aks6d1c2p2 43245 hashscontpow 43248 rspcsbnea 43257 |
| Copyright terms: Public domain | W3C validator |