Step |
Hyp |
Ref |
Expression |
1 |
|
c0ex |
|- 0 e. _V |
2 |
|
frnsuppeq |
|- ( ( I e. V /\ 0 e. _V ) -> ( F : I --> NN0 -> ( F supp 0 ) = ( `' F " ( NN0 \ { 0 } ) ) ) ) |
3 |
2
|
imp |
|- ( ( ( I e. V /\ 0 e. _V ) /\ F : I --> NN0 ) -> ( F supp 0 ) = ( `' F " ( NN0 \ { 0 } ) ) ) |
4 |
1 3
|
mpanl2 |
|- ( ( I e. V /\ F : I --> NN0 ) -> ( F supp 0 ) = ( `' F " ( NN0 \ { 0 } ) ) ) |
5 |
|
dfn2 |
|- NN = ( NN0 \ { 0 } ) |
6 |
5
|
eqcomi |
|- ( NN0 \ { 0 } ) = NN |
7 |
6
|
imaeq2i |
|- ( `' F " ( NN0 \ { 0 } ) ) = ( `' F " NN ) |
8 |
4 7
|
eqtrdi |
|- ( ( I e. V /\ F : I --> NN0 ) -> ( F supp 0 ) = ( `' F " NN ) ) |