Description: Lemma for 1arith . (Contributed by Mario Carneiro, 30-May-2014)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | 1arith.1 | |- M = ( n e. NN |-> ( p e. Prime |-> ( p pCnt n ) ) ) | |
| Assertion | 1arithlem3 | |- ( N e. NN -> ( M ` N ) : Prime --> NN0 ) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | 1arith.1 | |- M = ( n e. NN |-> ( p e. Prime |-> ( p pCnt n ) ) ) | |
| 2 | 1 | 1arithlem1 | |- ( N e. NN -> ( M ` N ) = ( p e. Prime |-> ( p pCnt N ) ) ) | 
| 3 | pccl | |- ( ( p e. Prime /\ N e. NN ) -> ( p pCnt N ) e. NN0 ) | |
| 4 | 3 | ancoms | |- ( ( N e. NN /\ p e. Prime ) -> ( p pCnt N ) e. NN0 ) | 
| 5 | 2 4 | fmpt3d | |- ( N e. NN -> ( M ` N ) : Prime --> NN0 ) |