Nuprl - Proof: map select 1 2 2

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At: map select 1 2 2

1. A : Type
2. B : Type
3. f : A

B
4. A List
5. u : A
6. v : A List
7.

n:

||v||. map(f;v)[n] = f(v[n])
8. n :

(||v||+1)
9.

n = 0

(f(u).map(f;v))[n] = f((u.v)[n])

By:	(RWH ((LemmaC Thm* a:T, as:T List, i:. 0<i i\|\|as\|\| (a.as)[i] = as[(i-1)]) (0) THEN (BackThru 7)

Generated subgoals:

None

About:

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

(6steps total) PrintForm Definitions Lemmas list 1 Sections StandardLIB Doc