Nuprl - Proof: card sigma vs nsub sigma 2 1 1 1

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At: card sigma vs nsub sigma 2 1 1 1

1. a :

2. 0<a
3.

b:(

(a-1)

). (i:

(a-1)

b(i)) ~

(

(a-1). b(i))
4. b :

(

(a-1). b(i))+

b(a-1)) ~

((

(a-1). b(i))+b(a-1))

By:	BackThru: Thm* a,b:. (a+b) ~ (a+b)

Generated subgoals:

None

About:

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