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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 5766 tfrlemi14d 6563 tfrexlem 6564 tfr1onlemres 6579 tfrcllemres 6592 tfrcldm 6593 erref 6786 1dom1el 7059 en2 7064 en2m 7065 xpdom2 7081 dom0 7090 xpen 7097 mapdom1g 7099 phplem4dom 7115 phplem4on 7121 fidceq 7123 dif1en 7135 fin0 7141 fin0or 7142 isinfinf 7153 eqsndc 7162 infm 7163 en2eqpr 7166 fiuni 7264 supelti 7292 djudom 7383 difinfsn 7390 enomnilem 7428 enmkvlem 7451 enwomnilem 7459 exmidfodomrlemim 7503 exmidaclem 7514 cc2lem 7579 cc3 7581 genpml 7831 genpmu 7832 ltexprlemm 7914 ltexprlemfl 7923 ltexprlemfu 7925 suplocsr 8123 axpre-suploc 8216 eqord1 8756 nn1suc 9255 nninfdcex 10596 zsupssdc 10597 seq3f1oleml 10877 zfz1isolem1 11208 eulerth 12926 4sqlem14 13098 4sqlem17 13101 4sqlem18 13102 ennnfonelemim 13167 exmidunben 13169 enctlem 13175 ctiunct 13183 unct 13185 omctfn 13186 omiunct 13187 relelbasov 13267 issubg2m 13898 lmff 15106 txcn 15132 suplociccreex 15481 suplociccex 15482 wlkvtxiedg 16332 wlkvtxiedgg 16333 wlkreslem 16365 eulerpathum 16468 3dom 16754 subctctexmid 16766 exmidsbthrlem 16794 sbthom 16798 gfsump1 16859 |
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