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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 1865 | . 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 1538 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia3 108 ax-5 1493 ax-gen 1495 ax-ie2 1540 ax-17 1572 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: fvmptdv2 5732 tfrlemi14d 6494 tfrexlem 6495 tfr1onlemres 6510 tfrcllemres 6523 tfrcldm 6524 erref 6717 1dom1el 6988 en2 6993 en2m 6994 xpdom2 7010 dom0 7019 xpen 7026 mapdom1g 7028 phplem4dom 7043 phplem4on 7049 fidceq 7051 dif1en 7063 fin0 7069 fin0or 7070 isinfinf 7081 eqsndc 7090 infm 7091 en2eqpr 7094 fiuni 7171 supelti 7195 djudom 7286 difinfsn 7293 enomnilem 7331 enmkvlem 7354 enwomnilem 7362 exmidfodomrlemim 7405 exmidaclem 7416 cc2lem 7478 cc3 7480 genpml 7730 genpmu 7731 ltexprlemm 7813 ltexprlemfl 7822 ltexprlemfu 7824 suplocsr 8022 axpre-suploc 8115 eqord1 8656 nn1suc 9155 nninfdcex 10490 zsupssdc 10491 seq3f1oleml 10771 zfz1isolem1 11097 eulerth 12798 4sqlem14 12970 4sqlem17 12973 4sqlem18 12974 ennnfonelemim 13038 exmidunben 13040 enctlem 13046 ctiunct 13054 unct 13056 omctfn 13057 omiunct 13058 relelbasov 13138 issubg2m 13769 lmff 14966 txcn 14992 suplociccreex 15341 suplociccex 15342 wlkvtxiedg 16156 wlkvtxiedgg 16157 wlkreslem 16187 3dom 16537 subctctexmid 16551 exmidsbthrlem 16576 sbthom 16580 |
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