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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 8775 nn1suc 9276 nninfdcex 10624 zsupssdc 10625 seq3f1oleml 10905 zfz1isolem1 11240 eulerth 12959 4sqlem14 13131 4sqlem17 13134 4sqlem18 13135 ennnfonelemim 13263 exmidunben 13265 enctlem 13271 ctiunct 13279 unct 13281 omctfn 13282 omiunct 13283 relelbasov 13363 issubg2m 13946 gfsump1 14112 opprringb 14328 lmff 15244 txcn 15270 suplociccreex 15619 suplociccex 15620 wlkvtxiedg 16470 wlkvtxiedgg 16471 wlkreslem 16503 eulerpathum 16606 3dom 16902 subctctexmid 16914 exmidsbthrlem 16942 sbthom 16946 |
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