| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > olci | GIF version | ||
| Description: Deduction introducing a disjunct. (Contributed by NM, 19-Jan-2008.) (Revised by Mario Carneiro, 31-Jan-2015.) |
| Ref | Expression |
|---|---|
| orci.1 | ⊢ 𝜑 |
| Ref | Expression |
|---|---|
| olci | ⊢ (𝜓 ∨ 𝜑) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | orci.1 | . 2 ⊢ 𝜑 | |
| 2 | olc 718 | . 2 ⊢ (𝜑 → (𝜓 ∨ 𝜑)) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝜓 ∨ 𝜑) |
| Colors of variables: wff set class |
| Syntax hints: ∨ wo 715 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-io 716 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: falortru 1451 sucidg 4515 finexdc 7097 elssdc 7099 finomni 7344 indpi 7567 1ap0 8775 iap0 9372 pnf0xnn0 9477 bcn1 11026 sum0 11972 prod0 12169 odd2np1lem 12456 lcm0val 12660 usgrexmpldifpr 16129 konigsberglem1 16368 ex-or 16375 dcapnconst 16733 |
| Copyright terms: Public domain | W3C validator |