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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 1722 mo3h 2134 necon1bidc 2464 necon4aidc 2480 r19.30dc 2690 ceqex 2944 ssdisj 3565 ralidm 3610 exmid1dc 4313 rexxfrd 4584 sucprcreg 4671 imain 5438 f0rn0 5562 funopfv 5714 mpteqb 5768 funfvima 5918 fliftfun 5969 fvdifsuppst 6444 suppssrst 6461 suppssrgst 6462 iinerm 6841 eroveu 6860 th3qlem1 6871 updjudhf 7370 elni2 7629 genpdisj 7838 lttri3 8353 seqf1og 10883 nn0ltexp2 11071 zfz1iso 11213 ccatalpha 11301 cau3lem 11799 maxleast 11898 rexanre 11905 climcau 12032 summodc 12069 mertenslem2 12222 prodmodclem2 12263 prodmodc 12264 fprodseq 12269 bitsfzolem 12640 bitsfzo 12641 divgcdcoprmex 12799 prmind2 12817 pcqmul 13001 pcxcl 13009 pcadd 13038 mul4sq 13092 issubg2m 13906 dvdsrtr 14246 unitgrp 14261 subrgintm 14388 islssm 14505 znidom 14805 opnneiid 15029 txuni2 15121 txbas 15123 txbasval 15132 txlm 15144 blin2 15297 tgqioo 15420 plyadd 15616 plymul 15617 lgsquad2lem2 15955 2sqlem5 15992 uhgr2edg 16201 uspgr2wlkeq 16360 bj-charfunr 16580 |
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