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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 1720 mo3h 2131 necon1bidc 2452 necon4aidc 2468 r19.30dc 2678 ceqex 2931 ssdisj 3549 ralidm 3593 exmid1dc 4288 rexxfrd 4558 sucprcreg 4645 imain 5409 f0rn0 5528 funopfv 5679 mpteqb 5733 funfvima 5881 fliftfun 5932 iinerm 6771 eroveu 6790 th3qlem1 6801 updjudhf 7269 elni2 7524 genpdisj 7733 lttri3 8249 seqf1og 10773 nn0ltexp2 10961 zfz1iso 11095 ccatalpha 11180 cau3lem 11665 maxleast 11764 rexanre 11771 climcau 11898 summodc 11934 mertenslem2 12087 prodmodclem2 12128 prodmodc 12129 fprodseq 12134 bitsfzolem 12505 bitsfzo 12506 divgcdcoprmex 12664 prmind2 12682 pcqmul 12866 pcxcl 12874 pcadd 12903 mul4sq 12957 issubg2m 13766 dvdsrtr 14105 unitgrp 14120 subrgintm 14247 islssm 14361 znidom 14661 opnneiid 14878 txuni2 14970 txbas 14972 txbasval 14981 txlm 14993 blin2 15146 tgqioo 15269 plyadd 15465 plymul 15466 lgsquad2lem2 15801 2sqlem5 15838 uhgr2edg 16045 uspgr2wlkeq 16162 bj-charfunr 16341 |
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