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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 1867 | . 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 1541 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia3 108 ax-5 1496 ax-gen 1498 ax-ie2 1543 ax-17 1575 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: fvmptdv2 5745 tfrlemi14d 6542 tfrexlem 6543 tfr1onlemres 6558 tfrcllemres 6571 tfrcldm 6572 erref 6765 1dom1el 7036 en2 7041 en2m 7042 xpdom2 7058 dom0 7067 xpen 7074 mapdom1g 7076 phplem4dom 7091 phplem4on 7097 fidceq 7099 dif1en 7111 fin0 7117 fin0or 7118 isinfinf 7129 eqsndc 7138 infm 7139 en2eqpr 7142 fiuni 7220 supelti 7244 djudom 7335 difinfsn 7342 enomnilem 7380 enmkvlem 7403 enwomnilem 7411 exmidfodomrlemim 7455 exmidaclem 7466 cc2lem 7528 cc3 7530 genpml 7780 genpmu 7781 ltexprlemm 7863 ltexprlemfl 7872 ltexprlemfu 7874 suplocsr 8072 axpre-suploc 8165 eqord1 8705 nn1suc 9204 nninfdcex 10543 zsupssdc 10544 seq3f1oleml 10824 zfz1isolem1 11150 eulerth 12868 4sqlem14 13040 4sqlem17 13043 4sqlem18 13044 ennnfonelemim 13108 exmidunben 13110 enctlem 13116 ctiunct 13124 unct 13126 omctfn 13127 omiunct 13128 relelbasov 13208 issubg2m 13839 lmff 15043 txcn 15069 suplociccreex 15418 suplociccex 15419 wlkvtxiedg 16269 wlkvtxiedgg 16270 wlkreslem 16302 eulerpathum 16405 3dom 16691 subctctexmid 16705 exmidsbthrlem 16733 sbthom 16737 gfsump1 16798 |
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