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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 1865 | . 2 ⊢ (𝜑 → (∃𝑥𝜓 → 𝜒)) |
| 5 | 1, 4 | mpd 13 | 1 ⊢ (𝜑 → 𝜒) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∃wex 1538 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia3 108 ax-5 1493 ax-gen 1495 ax-ie2 1540 ax-17 1572 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: fvmptdv2 5729 tfrlemi14d 6490 tfrexlem 6491 tfr1onlemres 6506 tfrcllemres 6519 tfrcldm 6520 erref 6713 en2 6986 en2m 6987 xpdom2 7003 dom0 7012 xpen 7019 mapdom1g 7021 phplem4dom 7036 phplem4on 7042 fidceq 7044 dif1en 7054 fin0 7060 fin0or 7061 isinfinf 7072 eqsndc 7081 infm 7082 en2eqpr 7085 fiuni 7161 supelti 7185 djudom 7276 difinfsn 7283 enomnilem 7321 enmkvlem 7344 enwomnilem 7352 exmidfodomrlemim 7395 exmidaclem 7406 cc2lem 7468 cc3 7470 genpml 7720 genpmu 7721 ltexprlemm 7803 ltexprlemfl 7812 ltexprlemfu 7814 suplocsr 8012 axpre-suploc 8105 eqord1 8646 nn1suc 9145 nninfdcex 10474 zsupssdc 10475 seq3f1oleml 10755 zfz1isolem1 11080 eulerth 12776 4sqlem14 12948 4sqlem17 12951 4sqlem18 12952 ennnfonelemim 13016 exmidunben 13018 enctlem 13024 ctiunct 13032 unct 13034 omctfn 13035 omiunct 13036 relelbasov 13116 issubg2m 13747 lmff 14944 txcn 14970 suplociccreex 15319 suplociccex 15320 wlkvtxiedg 16117 wlkvtxiedgg 16118 wlkreslem 16148 1dom1el 16463 3dom 16465 subctctexmid 16479 exmidsbthrlem 16504 sbthom 16508 |
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