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Related theorems GIF version |
| Description: Deduction from Theorem 19.23 of [Margaris] p. 90. |
| Ref | Expression |
|---|---|
| 19.23adv.1 | ⊢ (φ → (ψ → χ)) |
| Ref | Expression |
|---|---|
| 19.23adv | ⊢ (φ → (∃xψ → χ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-17 973 | . 2 ⊢ (φ → ∀xφ) | |
| 2 | ax-17 973 | . 2 ⊢ (χ → ∀xχ) | |
| 3 | 19.23adv.1 | . 2 ⊢ (φ → (ψ → χ)) | |
| 4 | 1, 2, 3 | 19.23ad 1068 | 1 ⊢ (φ → (∃xψ → χ)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ∃wex 982 |
| This theorem is referenced by: ax11v2 1217 19.23advv 1299 ax11eq 1365 ax11el 1366 ax11inda 1373 sssn 2477 iununi 2621 wefrc 2949 onfr 2992 funfvop 3809 dff2 3823 elunirnALT 3875 isomin 3905 isofrlem 3907 f1oweALT 3912 undom 4444 fodomr 4489 mapen 4497 mapdom2 4500 phplem4 4517 php3 4521 php3OLD 4522 pssnn 4544 ssfi 4547 ssfiOLD 4548 domfi 4549 domfiOLD 4550 isfinite2 4557 isfinite2OLD 4558 fiint 4572 fiintOLD 4573 fodomfi 4575 fodomfiOLD 4576 pm54.43 4581 inf3lem2 4623 zfregs 4657 r1pwcl 4697 cplem1 4730 aceq6b 4752 kmlem13 4787 zorn2lem7 4804 fodom 4808 fodomb 4810 unidom 4818 ltexpq 5092 ltbtwnpq 5096 genpnmax 5122 distrlem1pr 5139 1idpr 5145 psslinpr 5147 prlem934 5151 ltaddpr 5152 ltexprlem2 5155 ltexprlem6 5159 ltexprlem7 5160 prlem936 5167 reclem2pr 5169 reclem4pr 5171 suplem1pr 5173 recexsrlem 5224 recexsr 5228 suppsrlem 5233 suppsr2 5235 supsr 5243 suprelem 5271 axrnegex 5295 axrrecex 5296 sup2 6053 infmrcl 6071 fznt 6494 iserzext 7135 isumclim2tf 7198 isumreclt 7210 isummulc1ALT 7213 efseq0ex 7311 acdc2 7491 acdc 7496 infxpidmlem12 7564 tgval3t 7624 tgtopt 7627 basgen2t 7638 subtop 7643 metelcls 7962 iscms2lem5 7990 cmsss 7994 bcthlem31 8026 spansncv 9592 hmphsyma 10514 hmphtr 10517 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-gen 965 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-ex 983 |