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At: sublist tail 1 1 1 1 1 1 1

1. T: Type
2. Discrete{T}
3. eq: {T}
4. eq TT
5. u: T
6. v: T List
7. f1: {T=}
8. x,y:T. f1(x,y) eq(x,y)
9. xv.if eq(x,u) true else x(eq) v fi (z:T. z(f1) v if eq(z,u) true else z(eq) v fi)

xv.if eq(x,u) true else x(eq) v fi

By: HypBackchain

Generated subgoal:

110. z: T
11. z(f1) v
if eq(z,u) true else z(eq) v fi

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functionuniversememberimpliesall

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