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At: list exists is member lemma 2

1. T: Type
2. eq: TT
3. (x,y:T. eq(x,y) x = y) & eq TT
4. P: TProp
5. L: T List
6. yL.P(y)

x:T. x(eq) L & P(x)

By: ListInd 5

Generated subgoals:

1 ynil.P(y) (x:T. x(eq) nil & P(x))
26. u: T
7. v: T List
8. yv.P(y) (x:T. x(eq) v & P(x))
y(u.v).P(y) (x:T. x(eq) (u.v) & P(x))

About:
listconsnilboolassertapplyfunctionuniverseequal
memberpropimpliesandallexists

(35steps) PrintForm Definitions Lemmas list 3 jlc Sections Support(jlc) Doc