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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 8706 nn1suc 9205 nninfdcex 10541 zsupssdc 10542 seq3f1oleml 10822 zfz1isolem1 11148 eulerth 12866 4sqlem14 13038 4sqlem17 13041 4sqlem18 13042 ennnfonelemim 13106 exmidunben 13108 enctlem 13114 ctiunct 13122 unct 13124 omctfn 13125 omiunct 13126 relelbasov 13206 issubg2m 13837 lmff 15040 txcn 15066 suplociccreex 15415 suplociccex 15416 wlkvtxiedg 16266 wlkvtxiedgg 16267 wlkreslem 16299 eulerpathum 16402 3dom 16688 subctctexmid 16702 exmidsbthrlem 16730 sbthom 16734 gfsump1 16795 |
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