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Description: A /\ identity. (Contributed by Anthony Hart, 22-Oct-2010)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | falanfal | ⊢ ( ( ⊥ ∧ ⊥ ) ↔ ⊥ ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | anidm | ⊢ ( ( ⊥ ∧ ⊥ ) ↔ ⊥ ) |