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Description: The scalar product of a Hermitian operator with a real is Hermitian. (Contributed by NM, 23-Jul-2006) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | hmopm | |- ( ( A e. RR /\ T e. HrmOp ) -> ( A .op T ) e. HrmOp ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | recn | |- ( A e. RR -> A e. CC ) |
|
| 2 | hmopf | |- ( T e. HrmOp -> T : ~H --> ~H ) |
|
| 3 | homulcl | |- ( ( A e. CC /\ T : ~H --> ~H ) -> ( A .op T ) : ~H --> ~H ) |
|
| 4 | 1 2 3 | syl2an | |- ( ( A e. RR /\ T e. HrmOp ) -> ( A .op T ) : ~H --> ~H ) |
| 5 | cjre | |- ( A e. RR -> ( * ` A ) = A ) |
|
| 6 | hmop | |- ( ( T e. HrmOp /\ x e. ~H /\ y e. ~H ) -> ( x .ih ( T ` y ) ) = ( ( T ` x ) .ih y ) ) |
|
| 7 | 6 | 3expb | |- ( ( T e. HrmOp /\ ( x e. ~H /\ y e. ~H ) ) -> ( x .ih ( T ` y ) ) = ( ( T ` x ) .ih y ) ) |
| 8 | 5 7 | oveqan12d | |- ( ( A e. RR /\ ( T e. HrmOp /\ ( x e. ~H /\ y e. ~H ) ) ) -> ( ( * ` A ) x. ( x .ih ( T ` y ) ) ) = ( A x. ( ( T ` x ) .ih y ) ) ) |
| 9 | 8 | anassrs | |- ( ( ( A e. RR /\ T e. HrmOp ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( ( * ` A ) x. ( x .ih ( T ` y ) ) ) = ( A x. ( ( T ` x ) .ih y ) ) ) |
| 10 | 1 2 | anim12i | |- ( ( A e. RR /\ T e. HrmOp ) -> ( A e. CC /\ T : ~H --> ~H ) ) |
| 11 | homval | |- ( ( A e. CC /\ T : ~H --> ~H /\ y e. ~H ) -> ( ( A .op T ) ` y ) = ( A .h ( T ` y ) ) ) |
|
| 12 | 11 | 3expa | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ y e. ~H ) -> ( ( A .op T ) ` y ) = ( A .h ( T ` y ) ) ) |
| 13 | 12 | adantrl | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( ( A .op T ) ` y ) = ( A .h ( T ` y ) ) ) |
| 14 | 13 | oveq2d | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( x .ih ( ( A .op T ) ` y ) ) = ( x .ih ( A .h ( T ` y ) ) ) ) |
| 15 | simpll | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> A e. CC ) |
|
| 16 | simprl | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> x e. ~H ) |
|
| 17 | ffvelcdm | |- ( ( T : ~H --> ~H /\ y e. ~H ) -> ( T ` y ) e. ~H ) |
|
| 18 | 17 | ad2ant2l | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( T ` y ) e. ~H ) |
| 19 | his5 | |- ( ( A e. CC /\ x e. ~H /\ ( T ` y ) e. ~H ) -> ( x .ih ( A .h ( T ` y ) ) ) = ( ( * ` A ) x. ( x .ih ( T ` y ) ) ) ) |
|
| 20 | 15 16 18 19 | syl3anc | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( x .ih ( A .h ( T ` y ) ) ) = ( ( * ` A ) x. ( x .ih ( T ` y ) ) ) ) |
| 21 | 14 20 | eqtrd | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( x .ih ( ( A .op T ) ` y ) ) = ( ( * ` A ) x. ( x .ih ( T ` y ) ) ) ) |
| 22 | 10 21 | sylan | |- ( ( ( A e. RR /\ T e. HrmOp ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( x .ih ( ( A .op T ) ` y ) ) = ( ( * ` A ) x. ( x .ih ( T ` y ) ) ) ) |
| 23 | homval | |- ( ( A e. CC /\ T : ~H --> ~H /\ x e. ~H ) -> ( ( A .op T ) ` x ) = ( A .h ( T ` x ) ) ) |
|
| 24 | 23 | 3expa | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ x e. ~H ) -> ( ( A .op T ) ` x ) = ( A .h ( T ` x ) ) ) |
| 25 | 24 | adantrr | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( ( A .op T ) ` x ) = ( A .h ( T ` x ) ) ) |
| 26 | 25 | oveq1d | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( ( ( A .op T ) ` x ) .ih y ) = ( ( A .h ( T ` x ) ) .ih y ) ) |
| 27 | ffvelcdm | |- ( ( T : ~H --> ~H /\ x e. ~H ) -> ( T ` x ) e. ~H ) |
|
| 28 | 27 | ad2ant2lr | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( T ` x ) e. ~H ) |
| 29 | simprr | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> y e. ~H ) |
|
| 30 | ax-his3 | |- ( ( A e. CC /\ ( T ` x ) e. ~H /\ y e. ~H ) -> ( ( A .h ( T ` x ) ) .ih y ) = ( A x. ( ( T ` x ) .ih y ) ) ) |
|
| 31 | 15 28 29 30 | syl3anc | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( ( A .h ( T ` x ) ) .ih y ) = ( A x. ( ( T ` x ) .ih y ) ) ) |
| 32 | 26 31 | eqtrd | |- ( ( ( A e. CC /\ T : ~H --> ~H ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( ( ( A .op T ) ` x ) .ih y ) = ( A x. ( ( T ` x ) .ih y ) ) ) |
| 33 | 10 32 | sylan | |- ( ( ( A e. RR /\ T e. HrmOp ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( ( ( A .op T ) ` x ) .ih y ) = ( A x. ( ( T ` x ) .ih y ) ) ) |
| 34 | 9 22 33 | 3eqtr4d | |- ( ( ( A e. RR /\ T e. HrmOp ) /\ ( x e. ~H /\ y e. ~H ) ) -> ( x .ih ( ( A .op T ) ` y ) ) = ( ( ( A .op T ) ` x ) .ih y ) ) |
| 35 | 34 | ralrimivva | |- ( ( A e. RR /\ T e. HrmOp ) -> A. x e. ~H A. y e. ~H ( x .ih ( ( A .op T ) ` y ) ) = ( ( ( A .op T ) ` x ) .ih y ) ) |
| 36 | elhmop | |- ( ( A .op T ) e. HrmOp <-> ( ( A .op T ) : ~H --> ~H /\ A. x e. ~H A. y e. ~H ( x .ih ( ( A .op T ) ` y ) ) = ( ( ( A .op T ) ` x ) .ih y ) ) ) |
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| 37 | 4 35 36 | sylanbrc | |- ( ( A e. RR /\ T e. HrmOp ) -> ( A .op T ) e. HrmOp ) |