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| Mirrors > Home > ILE Home > Th. List > exlimddv | GIF version | ||
| Description: Existential elimination rule of natural deduction. (Contributed by Mario Carneiro, 15-Jun-2016.) |
| Ref | Expression |
|---|---|
| exlimddv.1 | ⊢ (𝜑 → ∃𝑥𝜓) |
| exlimddv.2 | ⊢ ((𝜑 ∧ 𝜓) → 𝜒) |
| Ref | Expression |
|---|---|
| exlimddv | ⊢ (𝜑 → 𝜒) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | exlimddv.1 | . 2 ⊢ (𝜑 → ∃𝑥𝜓) | |
| 2 | exlimddv.2 | . . . 4 ⊢ ((𝜑 ∧ 𝜓) → 𝜒) | |
| 3 | 2 | ex 115 | . . 3 ⊢ (𝜑 → (𝜓 → 𝜒)) |
| 4 | 3 | exlimdv 1872 | . 2 ⊢ (𝜑 → (∃𝑥𝜓 → 𝜒)) |
| 5 | 1, 4 | mpd 13 | 1 ⊢ (𝜑 → 𝜒) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∃wex 1545 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie2 1547 ax-17 1579 |
| This proof depends on definitions: df-bi 117 |
| This theorem is used by: fvmptdv2 5795 tfrlemi14d 6604 tfrexlem 6605 tfr1onlemres 6620 tfrcllemres 6633 tfrcldm 6634 erref 6827 1dom1el 7107 en2 7112 en2m 7113 xpdom2 7129 dom0 7138 xpen 7145 mapdom1g 7147 phplem4dom 7163 phplem4on 7169 fidceq 7171 dif1en 7183 fin0 7189 fin0or 7190 isinfinf 7201 eqsndc 7210 infm 7211 en2eqpr 7214 fiuni 7312 supelti 7342 djudom 7433 difinfsn 7440 enomnilem 7478 enmkvlem 7501 enwomnilem 7509 exmidfodomrlemim 7553 exmidaclem 7564 cc2lem 7632 cc3 7634 genpml 7884 genpmu 7885 ltexprlemm 7967 ltexprlemfl 7976 ltexprlemfu 7978 suplocsr 8176 axpre-suploc 8269 eqord1 8811 nn1suc 9324 nninfdcex 10674 zsupssdc 10675 seq3f1oleml 10955 zfz1isolem1 11294 eulerth 13013 4sqlem14 13185 4sqlem17 13188 4sqlem18 13189 ennnfonelemim 13317 exmidunben 13319 enctlem 13325 ctiunct 13333 unct 13335 omctfn 13336 omiunct 13337 relelbasov 13418 issubg2m 13994 gsump1 14159 gsumf1ofi 14162 gsummhmfi 14166 gsumressfi 14169 opprringb 14388 lmff 15352 txcn 15378 suplociccreex 15727 suplociccex 15728 wlkvtxiedg 16598 wlkvtxiedgg 16599 wlkreslem 16631 eulerpathum 16734 3dom 17030 subctctexmid 17042 exmidsbthrlem 17079 sbthom 17083 |
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