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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 |
| Syntax hints: → wi 4 ∧ wa 104 ∃wex 1545 |
| This theorem was proved from 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 theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: fvmptdv2 5792 tfrlemi14d 6598 tfrexlem 6599 tfr1onlemres 6614 tfrcllemres 6627 tfrcldm 6628 erref 6821 1dom1el 7101 en2 7106 en2m 7107 xpdom2 7123 dom0 7132 xpen 7139 mapdom1g 7141 phplem4dom 7157 phplem4on 7163 fidceq 7165 dif1en 7177 fin0 7183 fin0or 7184 isinfinf 7195 eqsndc 7204 infm 7205 en2eqpr 7208 fiuni 7306 supelti 7336 djudom 7427 difinfsn 7434 enomnilem 7472 enmkvlem 7495 enwomnilem 7503 exmidfodomrlemim 7547 exmidaclem 7558 cc2lem 7626 cc3 7628 genpml 7878 genpmu 7879 ltexprlemm 7961 ltexprlemfl 7970 ltexprlemfu 7972 suplocsr 8170 axpre-suploc 8263 eqord1 8805 nn1suc 9306 nninfdcex 10655 zsupssdc 10656 seq3f1oleml 10936 zfz1isolem1 11275 eulerth 12994 4sqlem14 13166 4sqlem17 13169 4sqlem18 13170 ennnfonelemim 13298 exmidunben 13300 enctlem 13306 ctiunct 13314 unct 13316 omctfn 13317 omiunct 13318 relelbasov 13399 issubg2m 13975 gsump1 14140 gsumf1ofi 14143 gsummhmfi 14147 gsumressfi 14150 opprringb 14369 lmff 15333 txcn 15359 suplociccreex 15708 suplociccex 15709 wlkvtxiedg 16569 wlkvtxiedgg 16570 wlkreslem 16602 eulerpathum 16705 3dom 17001 subctctexmid 17013 exmidsbthrlem 17041 sbthom 17045 |
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