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Mirrors > Home > MPE Home > Th. List > Mathboxes > idn1 | Structured version Visualization version GIF version |
Description: Virtual deduction identity rule which is id 22 with virtual deduction symbols. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
idn1 | ⊢ ( 𝜑 ▶ 𝜑 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . 2 ⊢ (𝜑 → 𝜑) | |
2 | 1 | dfvd1ir 41914 | 1 ⊢ ( 𝜑 ▶ 𝜑 ) |
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