| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 1872 | . 2 ⊢ (𝜑 → (∃𝑥𝜓 → 𝜒)) |
| 5 | 1, 4 | mpd 13 | 1 ⊢ (𝜑 → 𝜒) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∃wex 1545 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie2 1547 ax-17 1579 |
| This proof depends on definitions: df-bi 117 |
| This theorem is used by: fvmptdv2 5798 tfrlemi14d 6609 tfrexlem 6610 tfr1onlemres 6625 tfrcllemres 6638 tfrcldm 6639 erref 6832 1dom1el 7113 en2 7118 en2m 7119 xpdom2 7135 dom0 7144 xpen 7151 mapdom1g 7153 phplem4dom 7169 phplem4on 7175 fidceq 7177 dif1en 7189 fin0 7195 fin0or 7196 isinfinf 7207 eqsndc 7216 infm 7217 en2eqpr 7220 funisfsuppdc 7299 fiuni 7318 supelti 7349 djudom 7440 difinfsn 7447 enomnilem 7485 enmkvlem 7508 enwomnilem 7516 exmidfodomrlemim 7560 exmidaclem 7571 cc2lem 7639 cc3 7641 genpml 7891 genpmu 7892 ltexprlemm 7974 ltexprlemfl 7983 ltexprlemfu 7985 suplocsr 8183 axpre-suploc 8276 eqord1 8819 nn1suc 9333 nninfdcex 10689 zsupssdc 10690 seq3f1oleml 10974 zfz1isolem1 11314 eulerth 13040 4sqlem14 13212 4sqlem17 13215 4sqlem18 13216 ennnfonelemim 13373 exmidunben 13375 enctlem 13381 ctiunct 13389 unct 13391 omctfn 13392 omiunct 13393 relelbasov 13474 issubg2m 14051 gsump1 14247 gsumf1ofi 14250 gsummhmfi 14264 gsumressfi 14267 opprringb 14495 psrbagmax 15190 psrbagfsuppub 15192 mplsubgfilemcl 15246 mplsubgfileminv 15247 lmff 15508 txcn 15534 suplociccreex 15883 suplociccex 15884 wlkvtxiedg 16824 wlkvtxiedgg 16825 wlkreslem 16857 eulerpathum 16960 3dom 17256 subctctexmid 17268 exmidsbthrlem 17306 sbthom 17310 |
| Copyright terms: Public domain | W3C validator |