| Step |
Hyp |
Ref |
Expression |
| 1 |
|
axhil.1 |
|- U = <. <. +h , .h >. , normh >. |
| 2 |
|
axhil.2 |
|- U e. CHilOLD |
| 3 |
|
df-hba |
|- ~H = ( BaseSet ` <. <. +h , .h >. , normh >. ) |
| 4 |
1
|
fveq2i |
|- ( BaseSet ` U ) = ( BaseSet ` <. <. +h , .h >. , normh >. ) |
| 5 |
3 4
|
eqtr4i |
|- ~H = ( BaseSet ` U ) |
| 6 |
2
|
hlnvi |
|- U e. NrmCVec |
| 7 |
1 6
|
h2hva |
|- +h = ( +v ` U ) |
| 8 |
1 6
|
h2hsm |
|- .h = ( .sOLD ` U ) |
| 9 |
5 7 8
|
hldi |
|- ( ( U e. CHilOLD /\ ( A e. CC /\ B e. ~H /\ C e. ~H ) ) -> ( A .h ( B +h C ) ) = ( ( A .h B ) +h ( A .h C ) ) ) |
| 10 |
2 9
|
mpan |
|- ( ( A e. CC /\ B e. ~H /\ C e. ~H ) -> ( A .h ( B +h C ) ) = ( ( A .h B ) +h ( A .h C ) ) ) |