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Mirrors > Home > LLPE Home > Th. List > wel | Structured version |
Description: Set element predicate. For the purposes of predicate logic, it's just an arbitrary operator. |
Ref | Expression |
---|---|
vx | var x |
vy | var y |
Ref | Expression |
---|---|
wel | wff x ∈ y |
Colors of variables: wff var nilad |
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