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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 5886 fliftfun 5937 iinerm 6776 eroveu 6795 th3qlem1 6806 updjudhf 7278 elni2 7534 genpdisj 7743 lttri3 8259 seqf1og 10784 nn0ltexp2 10972 zfz1iso 11106 ccatalpha 11194 cau3lem 11692 maxleast 11791 rexanre 11798 climcau 11925 summodc 11962 mertenslem2 12115 prodmodclem2 12156 prodmodc 12157 fprodseq 12162 bitsfzolem 12533 bitsfzo 12534 divgcdcoprmex 12692 prmind2 12710 pcqmul 12894 pcxcl 12902 pcadd 12931 mul4sq 12985 issubg2m 13794 dvdsrtr 14134 unitgrp 14149 subrgintm 14276 islssm 14390 znidom 14690 opnneiid 14907 txuni2 14999 txbas 15001 txbasval 15010 txlm 15022 blin2 15175 tgqioo 15298 plyadd 15494 plymul 15495 lgsquad2lem2 15830 2sqlem5 15867 uhgr2edg 16076 uspgr2wlkeq 16235 bj-charfunr 16456 |
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