| Mathbox for Alan Sare |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > eelT | Structured version Visualization version GIF version | ||
| Description: An elimination deduction. (Contributed by Alan Sare, 5-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| eelT.1 | ⊢ (⊤ → 𝜑) |
| eelT.2 | ⊢ (𝜑 → 𝜓) |
| Ref | Expression |
|---|---|
| eelT | ⊢ 𝜓 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eelT.1 | . . 3 ⊢ (⊤ → 𝜑) | |
| 2 | eelT.2 | . . 3 ⊢ (𝜑 → 𝜓) | |
| 3 | 1, 2 | syl 17 | . 2 ⊢ (⊤ → 𝜓) |
| 4 | 3 | mptru 1546 | 1 ⊢ 𝜓 |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ⊤wtru 1540 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This theorem depends on definitions: df-bi 207 df-tru 1542 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |