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| Mirrors > Home > LLPE Home > Th. List > lbsym | Structured version | |
| Description: Linear biconditional is symmetric. |
| Ref | Expression |
|---|---|
| lbsym | ⊦ ((𝜑 ⧟ 𝜓) ⊸ (𝜓 ⧟ 𝜑)) |
| Step | Hyp | Ref | Expression |
|---|
| Colors of variables: wff var nilad |
| Syntax hints: ⧟ wlb 55 ⊸ wli 61 |
| WARNING: This theorem has an
incomplete proof. |
| This theorem is referenced by: (None) |
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