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Mirrors > Home > LLPE Home > Th. List > df-ii | Structured version |
Description: Definition of the I combinator. |
Ref | Expression |
---|---|
df-ii | ⊦ I = λaa |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nii 288 | . 2 nilad I | |
2 | va | . . 3 var a | |
3 | 2 | nvar 203 | . . 3 nilad a |
4 | 2, 3 | nla 279 | . 2 nilad λaa |
5 | 1, 4 | weq 246 | 1 wff I = λaa |
Colors of variables: wff var nilad |
This definition is referenced by: (None) |
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