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Mirrors > Home > LLPE Home > Th. List > lb1i | Structured version |
Description: Forward inference using ⧟. |
Ref | Expression |
---|---|
lb1i.1 | ⊦ 𝜑 |
lb1i.2 | ⊦ (𝜑 ⧟ 𝜓) |
Ref | Expression |
---|---|
lb1i | ⊦ 𝜓 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lb1i.1 | . . . 4 ⊦ 𝜑 | |
2 | 1 | ax-ibot 4 | . . 3 ⊦ (⊥ ⅋ 𝜑) |
3 | lb1i.2 | . . 3 ⊦ (𝜑 ⧟ 𝜓) | |
4 | 2, 3 | lb1d 57 | . 2 ⊦ (⊥ ⅋ 𝜓) |
5 | 4 | ax-ebot 5 | 1 ⊦ 𝜓 |
Colors of variables: wff var nilad |
Syntax hints: ⊥wbot 1 ⧟ wlb 55 |
This theorem was proved from axioms: ax-ibot 4 ax-ebot 5 ax-cut 6 ax-init 7 ax-mdco 8 ax-eac1 33 |
This theorem depends on definitions: df-lb 56 |
This theorem is referenced by: mdm2 69 syl 75 |
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