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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 1540 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia3 108 ax-5 1495 ax-gen 1497 ax-ie2 1542 ax-17 1574 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: fvmptdv2 5736 tfrlemi14d 6499 tfrexlem 6500 tfr1onlemres 6515 tfrcllemres 6528 tfrcldm 6529 erref 6722 1dom1el 6993 en2 6998 en2m 6999 xpdom2 7015 dom0 7024 xpen 7031 mapdom1g 7033 phplem4dom 7048 phplem4on 7054 fidceq 7056 dif1en 7068 fin0 7074 fin0or 7075 isinfinf 7086 eqsndc 7095 infm 7096 en2eqpr 7099 fiuni 7177 supelti 7201 djudom 7292 difinfsn 7299 enomnilem 7337 enmkvlem 7360 enwomnilem 7368 exmidfodomrlemim 7412 exmidaclem 7423 cc2lem 7485 cc3 7487 genpml 7737 genpmu 7738 ltexprlemm 7820 ltexprlemfl 7829 ltexprlemfu 7831 suplocsr 8029 axpre-suploc 8122 eqord1 8663 nn1suc 9162 nninfdcex 10498 zsupssdc 10499 seq3f1oleml 10779 zfz1isolem1 11105 eulerth 12810 4sqlem14 12982 4sqlem17 12985 4sqlem18 12986 ennnfonelemim 13050 exmidunben 13052 enctlem 13058 ctiunct 13066 unct 13068 omctfn 13069 omiunct 13070 relelbasov 13150 issubg2m 13781 lmff 14979 txcn 15005 suplociccreex 15354 suplociccex 15355 wlkvtxiedg 16202 wlkvtxiedgg 16203 wlkreslem 16235 eulerpathum 16338 3dom 16613 subctctexmid 16627 exmidsbthrlem 16652 sbthom 16656 gfsump1 16712 |
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