Nuprl - Proof: inj imp le 1 1 2

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At: inj imp le 1 1 2

1. m :

2. 0<m
3.

k':

. (

f':(

(m-1)

k'). Inj(

(m-1);

k'; f'))

m-1

k'
4. k :

5. f :

m

k
6. Inj(

m;

k; f)
7. k-1

m-1

k-1

By:	BackThru: Hyp:3

Generated subgoal:

1 f':((m-1)(k-1)). Inj((m-1); (k-1); f')
2 steps

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(7steps total) PfGloss PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc