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| Mirrors > Home > ILE Home > Th. List > biimtrrid | GIF version | ||
| Description: A mixed syllogism inference from a nested implication and a biconditional. (Contributed by NM, 5-Aug-1993.) |
| Ref | Expression |
|---|---|
| biimtrrid.1 | ⊢ (𝜓 ↔ 𝜑) |
| biimtrrid.2 | ⊢ (𝜒 → (𝜓 → 𝜃)) |
| Ref | Expression |
|---|---|
| biimtrrid | ⊢ (𝜒 → (𝜑 → 𝜃)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | biimtrrid.1 | . . 3 ⊢ (𝜓 ↔ 𝜑) | |
| 2 | 1 | biimpri 133 | . 2 ⊢ (𝜑 → 𝜓) |
| 3 | biimtrrid.2 | . 2 ⊢ (𝜒 → (𝜓 → 𝜃)) | |
| 4 | 2, 3 | syl5 32 | 1 ⊢ (𝜒 → (𝜑 → 𝜃)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: 3imtr3g 204 19.37-1 1726 mo3h 2140 necon1bidc 2472 necon4aidc 2488 r19.30dc 2698 ceqex 2953 ssdisj 3580 ralidm 3625 exmid1dc 4332 rexxfrd 4604 sucprcreg 4691 imain 5458 f0rn0 5582 funopfv 5734 mpteqb 5790 funfvima 5940 fliftfun 5992 fvdifsuppst 6474 suppssrst 6491 suppssrgst 6492 iinerm 6871 eroveu 6890 th3qlem1 6901 updjudhf 7409 elni2 7671 genpdisj 7880 lttri3 8395 seqf1og 10936 nn0ltexp2 11125 zfz1iso 11271 ccatalpha 11359 cau3lem 11858 maxleast 11957 rexanre 11964 climcau 12091 summodc 12128 mertenslem2 12281 prodmodclem2 12322 prodmodc 12323 fprodseq 12328 bitsfzolem 12699 bitsfzo 12700 divgcdcoprmex 12858 prmind2 12876 pcqmul 13060 pcxcl 13068 pcadd 13097 mul4sq 13151 issubg2m 13969 dvdsrtr 14381 unitgrp 14396 subrgintm 14524 islssm 14666 znidom 14964 opnneiid 15188 txuni2 15280 txbas 15282 txbasval 15291 txlm 15303 blin2 15456 tgqioo 15579 plyadd 15775 plymul 15776 lgsquad2lem2 16115 2sqlem5 16152 uhgr2edg 16361 uspgr2wlkeq 16520 bj-charfunr 16750 |
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