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| Mirrors > Home > MPE Home > Th. List > intnanrd | Structured version Visualization version GIF version | ||
| Description: Introduction of conjunct inside of a contradiction. (Contributed by NM, 10-Jul-2005.) |
| Ref | Expression |
|---|---|
| intnand.1 | ⊢ (𝜑 → ¬ 𝜓) |
| Ref | Expression |
|---|---|
| intnanrd | ⊢ (𝜑 → ¬ (𝜓 ∧ 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | intnand.1 | . 2 ⊢ (𝜑 → ¬ 𝜓) | |
| 2 | simpl 488 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜓) | |
| 3 | 1, 2 | nsyl 141 | 1 ⊢ (𝜑 → ¬ (𝜓 ∧ 𝜒)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 |
| 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-an 402 |
| This theorem is used by: bianfd 544 3bior1fand 1507 pr1eqbg 4817 iresn0n0 6046 frxp2 8154 frxp3 8161 wemappo 9536 axrepnd 10672 axunnd 10674 fzpreddisj 13700 sadadd2lem2 16613 smumullem 16655 nndvdslegcd 16668 divgcdnn 16680 sqgcd 16729 coprm 16880 isnmnd 18920 nfimdetndef 22897 mdetfval1 22898 ibladdlem 26133 lgsval2lem 27627 lgsval4a 27639 lgsdilem 27644 2sqcoprm 27755 addsqn2reurex2 27765 nosepdmlem 28033 nodenselem8 28041 nosupbnd2lem1 28065 pw2cut2 28841 nbgrnself 29933 wwlks 30417 iswspthsnon 30438 clwwlknon1nloop 30683 clwwlknon1le1 30685 nfrgr2v 30866 tpssad 33128 hashxpe 33392 esplyind 34200 acycgr0v 35892 prclisacycgr 35895 fmlasucdisj 36143 dfrdg4 36695 nmulprop 36919 finxpreclem3 38296 finxpreclem5 38298 ibladdnclem 38574 dihatlat 42371 xppss12 43263 jm2.23 43982 rexanuz2nf 46471 ltnelicc 46478 limciccioolb 46602 dvmptfprodlem 46923 stoweidlem26 47005 fourierdlem12 47098 fourierdlem42 47128 divgcdoddALTV 48749 |
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