| 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 224 | . . 3 ⊢ (𝜑 → (𝐴 = 𝐵 ↔ 𝜓)) |
| 3 | 2 | necon3abid 2971 | . 2 ⊢ (𝜑 → (𝐴 ≠ 𝐵 ↔ ¬ 𝜓)) |
| 4 | 3 | bicomd 224 | 1 ⊢ (𝜑 → (¬ 𝜓 ↔ 𝐴 ≠ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 207 = wceq 1547 ≠ wne 2935 |
| 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 208 df-ne 2936 |
| This theorem is referenced by: necon1abid 2973 necon3bid 2979 eldifsn 4726 php 9138 xmullem2 13215 fzdif1 13557 seqcoll2 14425 cnpart 15200 rlimrecl 15540 ncoprmgcdne1b 16617 prmrp 16680 4sqlem17 16930 mrieqvd 17602 mrieqv2d 17603 pltval 18294 latnlemlt 18436 latnle 18437 odnncl 19518 gexnnod 19561 sylow1lem1 19571 slwpss 19585 lssnle 19647 nzrunit 20503 imadrhmcl 20776 lspsnne1 21117 cnsubrg 21409 psrridm 21944 mhpmulcl 22144 cmpfi 23398 hausdiag 23635 txhaus 23637 isusp 24251 recld2 24805 metdseq0 24845 i1f1lem 25681 aaliou2b 26332 dvloglem 26637 logf1o2 26639 lgsne0 27323 lgsqr 27339 2sqlem7 27412 ostth3 27626 tglngne 28643 tgelrnln 28723 eucrct2eupth 30340 norm1exi 31346 atnemeq0 32473 opeldifid 32695 arginv 32846 sgnneg 32932 unitnz 33327 isdrng4 33386 pridln1 33533 mxidln1 33556 ssmxidllem 33563 rprmnz 33610 ply1unit 33665 ply1dg3rt0irred 33674 constrrtll 33922 qtophaus 34027 ordtconnlem1 34115 elzrhunit 34168 subfacp1lem6 35414 maxidln1 38412 smprngopr 38420 lsatnem0 39538 atncmp 39805 atncvrN 39808 cdlema2N 40285 lhpmatb 40524 lhpat3 40539 cdleme3 40730 cdleme7 40742 cdlemg27b 41189 dvh2dimatN 41933 dvh2dim 41938 dochexmidlem1 41953 dochfln0 41970 dvrelog2b 42552 aks6d1c2p2 42605 hashscontpow 42608 rspcsbnea 42617 nna4b4nsq 43111 |
| Copyright terms: Public domain | W3C validator |