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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 2455 necon4aidc 2471 r19.30dc 2681 ceqex 2934 ssdisj 3553 ralidm 3597 exmid1dc 4296 rexxfrd 4566 sucprcreg 4653 imain 5419 f0rn0 5540 funopfv 5692 mpteqb 5746 funfvima 5896 fliftfun 5947 fvdifsuppst 6422 suppssrst 6439 suppssrgst 6440 iinerm 6819 eroveu 6838 th3qlem1 6849 updjudhf 7321 elni2 7577 genpdisj 7786 lttri3 8301 seqf1og 10829 nn0ltexp2 11017 zfz1iso 11151 ccatalpha 11239 cau3lem 11737 maxleast 11836 rexanre 11843 climcau 11970 summodc 12007 mertenslem2 12160 prodmodclem2 12201 prodmodc 12202 fprodseq 12207 bitsfzolem 12578 bitsfzo 12579 divgcdcoprmex 12737 prmind2 12755 pcqmul 12939 pcxcl 12947 pcadd 12976 mul4sq 13030 issubg2m 13839 dvdsrtr 14179 unitgrp 14194 subrgintm 14321 islssm 14436 znidom 14736 opnneiid 14958 txuni2 15050 txbas 15052 txbasval 15061 txlm 15073 blin2 15226 tgqioo 15349 plyadd 15545 plymul 15546 lgsquad2lem2 15884 2sqlem5 15921 uhgr2edg 16130 uspgr2wlkeq 16289 bj-charfunr 16509 |
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