2. eq: {T=
}3. P: T
4. L: T List
5. x: T
6. x(
eq) L7. P(x)
x(eq) filter((
x.P(x));L)
T:Type, eq:{T=}, P:(T), L:T List, x:T. x(eq) L 
P(x) x(eq) filter((x.P(x));L)
| 1 | 1. T: Type 2. eq: {T= }3. P: T 4. L: T List 5. x: T 6. x( eq) L7. P(x) x(eq) filter((x.P(x));L) |
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