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Mirrors > Home > ILE Home > Th. List > syl5ib | GIF version |
Description: A mixed syllogism inference. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
syl5ib.1 | ⊢ (𝜑 → 𝜓) |
syl5ib.2 | ⊢ (𝜒 → (𝜓 ↔ 𝜃)) |
Ref | Expression |
---|---|
syl5ib | ⊢ (𝜒 → (𝜑 → 𝜃)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | syl5ib.1 | . 2 ⊢ (𝜑 → 𝜓) | |
2 | syl5ib.2 | . . 3 ⊢ (𝜒 → (𝜓 ↔ 𝜃)) | |
3 | 2 | biimpd 143 | . 2 ⊢ (𝜒 → (𝜓 → 𝜃)) |
4 | 1, 3 | syl5 32 | 1 ⊢ (𝜒 → (𝜑 → 𝜃)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ↔ wb 104 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: syl5ibcom 154 syl5ibr 155 sbft 1820 gencl 2718 spsbc 2920 prexg 4133 posng 4611 sosng 4612 optocl 4615 relcnvexb 5078 funimass1 5200 dmfex 5312 f1ocnvb 5381 eqfnfv2 5519 elpreima 5539 dff13 5669 f1ocnvfv 5680 f1ocnvfvb 5681 fliftfun 5697 eusvobj2 5760 mpoxopn0yelv 6136 rntpos 6154 erexb 6454 findcard2 6783 findcard2s 6784 xpfi 6818 sbthlemi3 6847 enq0tr 7242 addnqprllem 7335 addnqprulem 7336 distrlem1prl 7390 distrlem1pru 7391 recexprlem1ssl 7441 recexprlem1ssu 7442 elrealeu 7637 addcan 7942 addcan2 7943 neg11 8013 negreb 8027 mulcanapd 8422 receuap 8430 cju 8719 nn1suc 8739 nnaddcl 8740 nndivtr 8762 znegclb 9087 zaddcllempos 9091 zmulcl 9107 zeo 9156 uz11 9348 uzp1 9359 eqreznegel 9406 xneg11 9617 xnegdi 9651 modqadd1 10134 modqmul1 10150 frec2uzltd 10176 bccmpl 10500 fz1eqb 10537 cj11 10677 rennim 10774 resqrexlemgt0 10792 efne0 11384 dvdsabseq 11545 uptx 12443 hmeocnvb 12487 tgioo 12715 bj-nnbidc 12962 bj-prexg 13109 strcollnft 13182 |
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