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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 2133 necon1bidc 2454 necon4aidc 2470 r19.30dc 2680 ceqex 2933 ssdisj 3551 ralidm 3595 exmid1dc 4290 rexxfrd 4560 sucprcreg 4647 imain 5412 f0rn0 5531 funopfv 5683 mpteqb 5737 funfvima 5885 fliftfun 5936 iinerm 6775 eroveu 6794 th3qlem1 6805 updjudhf 7277 elni2 7533 genpdisj 7742 lttri3 8258 seqf1og 10782 nn0ltexp2 10970 zfz1iso 11104 ccatalpha 11189 cau3lem 11674 maxleast 11773 rexanre 11780 climcau 11907 summodc 11943 mertenslem2 12096 prodmodclem2 12137 prodmodc 12138 fprodseq 12143 bitsfzolem 12514 bitsfzo 12515 divgcdcoprmex 12673 prmind2 12691 pcqmul 12875 pcxcl 12883 pcadd 12912 mul4sq 12966 issubg2m 13775 dvdsrtr 14114 unitgrp 14129 subrgintm 14256 islssm 14370 znidom 14670 opnneiid 14887 txuni2 14979 txbas 14981 txbasval 14990 txlm 15002 blin2 15155 tgqioo 15278 plyadd 15474 plymul 15475 lgsquad2lem2 15810 2sqlem5 15847 uhgr2edg 16056 uspgr2wlkeq 16215 bj-charfunr 16405 |
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