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 213 | . . 3 ⊢ (𝜑 → (𝐴 = 𝐵 ↔ 𝜓)) |
3 | 2 | necon3abid 2830 | . 2 ⊢ (𝜑 → (𝐴 ≠ 𝐵 ↔ ¬ 𝜓)) |
4 | 3 | bicomd 213 | 1 ⊢ (𝜑 → (¬ 𝜓 ↔ 𝐴 ≠ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 196 = wceq 1483 ≠ wne 2794 |
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 197 df-ne 2795 |
This theorem is referenced by: necon1abid 2832 necon3bid 2838 eldifsn 4317 php 8144 xmullem2 12095 seqcoll2 13249 cnpart 13980 rlimrecl 14311 ncoprmgcdne1b 15363 prmrp 15424 4sqlem17 15665 mrieqvd 16298 mrieqv2d 16299 pltval 16960 latnlemlt 17084 latnle 17085 odnncl 17964 gexnnod 18003 sylow1lem1 18013 slwpss 18027 lssnle 18087 lspsnne1 19117 nzrunit 19267 psrridm 19404 cnsubrg 19806 cmpfi 21211 hausdiag 21448 txhaus 21450 isusp 22065 recld2 22617 metdseq0 22657 i1f1lem 23456 aaliou2b 24096 dvloglem 24394 logf1o2 24396 lgsne0 25060 lgsqr 25076 2sqlem7 25149 ostth3 25327 tglngne 25445 tgelrnln 25525 eucrct2eupth 27105 norm1exi 28107 atnemeq0 29236 opeldifid 29412 qtophaus 29903 ordtconnlem1 29970 elzrhunit 30023 sgnneg 30602 subfacp1lem6 31167 maxidln1 33843 smprngopr 33851 lsatnem0 34332 atncmp 34599 atncvrN 34602 cdlema2N 35078 lhpmatb 35317 lhpat3 35332 cdleme3 35524 cdleme7 35536 cdlemg27b 35984 dvh2dimatN 36729 dvh2dim 36734 dochexmidlem1 36749 dochfln0 36766 |
Copyright terms: Public domain | W3C validator |