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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 1868 | . 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 5772 tfrlemi14d 6577 tfrexlem 6578 tfr1onlemres 6593 tfrcllemres 6606 tfrcldm 6607 erref 6800 1dom1el 7073 en2 7078 en2m 7079 xpdom2 7095 dom0 7104 xpen 7111 mapdom1g 7113 phplem4dom 7129 phplem4on 7135 fidceq 7137 dif1en 7149 fin0 7155 fin0or 7156 isinfinf 7167 eqsndc 7176 infm 7177 en2eqpr 7180 fiuni 7278 supelti 7306 djudom 7397 difinfsn 7404 enomnilem 7442 enmkvlem 7465 enwomnilem 7473 exmidfodomrlemim 7517 exmidaclem 7528 cc2lem 7596 cc3 7598 genpml 7848 genpmu 7849 ltexprlemm 7931 ltexprlemfl 7940 ltexprlemfu 7942 suplocsr 8140 axpre-suploc 8233 eqord1 8774 nn1suc 9273 nninfdcex 10621 zsupssdc 10622 seq3f1oleml 10902 zfz1isolem1 11237 eulerth 12955 4sqlem14 13127 4sqlem17 13130 4sqlem18 13131 ennnfonelemim 13259 exmidunben 13261 enctlem 13267 ctiunct 13275 unct 13277 omctfn 13278 omiunct 13279 relelbasov 13359 issubg2m 13990 opprringb 14309 lmff 15226 txcn 15252 suplociccreex 15601 suplociccex 15602 wlkvtxiedg 16452 wlkvtxiedgg 16453 wlkreslem 16485 eulerpathum 16588 3dom 16874 subctctexmid 16886 exmidsbthrlem 16914 sbthom 16918 gfsump1 16980 |
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