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Mirrors > Home > LLPE Home > Th. List > abid | Structured version |
Description: Proper substitution of a variable for itself. |
Ref | Expression |
---|---|
abid | ⊦ (𝜑 ⧟ [x ≔ x] 𝜑) |
Step | Hyp | Ref | Expression |
---|
Colors of variables: wff var nilad |
Syntax hints: ⧟ wlb 55 nvar 203 [wsub 207 |
WARNING: This theorem has an
incomplete proof. |
This theorem is referenced by: (None) |
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