Description: Properties of the closure of the kernel of a functional. (Contributed by NM, 1-Jan-2015)
Ref | Expression | ||
---|---|---|---|
Hypotheses | dochkrshp2.h | |- H = ( LHyp ` K ) |
|
dochkrshp2.o | |- ._|_ = ( ( ocH ` K ) ` W ) |
||
dochkrshp2.u | |- U = ( ( DVecH ` K ) ` W ) |
||
dochkrshp2.v | |- V = ( Base ` U ) |
||
dochkrshp2.y | |- Y = ( LSHyp ` U ) |
||
dochkrshp2.f | |- F = ( LFnl ` U ) |
||
dochkrshp2.l | |- L = ( LKer ` U ) |
||
dochkrshp2.k | |- ( ph -> ( K e. HL /\ W e. H ) ) |
||
dochkrshp2.g | |- ( ph -> G e. F ) |
||
Assertion | dochkrshp2 | |- ( ph -> ( ( ._|_ ` ( ._|_ ` ( L ` G ) ) ) =/= V <-> ( ( ._|_ ` ( ._|_ ` ( L ` G ) ) ) = ( L ` G ) /\ ( L ` G ) e. Y ) ) ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dochkrshp2.h | |- H = ( LHyp ` K ) |
|
2 | dochkrshp2.o | |- ._|_ = ( ( ocH ` K ) ` W ) |
|
3 | dochkrshp2.u | |- U = ( ( DVecH ` K ) ` W ) |
|
4 | dochkrshp2.v | |- V = ( Base ` U ) |
|
5 | dochkrshp2.y | |- Y = ( LSHyp ` U ) |
|
6 | dochkrshp2.f | |- F = ( LFnl ` U ) |
|
7 | dochkrshp2.l | |- L = ( LKer ` U ) |
|
8 | dochkrshp2.k | |- ( ph -> ( K e. HL /\ W e. H ) ) |
|
9 | dochkrshp2.g | |- ( ph -> G e. F ) |
|
10 | 1 2 3 4 5 6 7 8 9 | dochkrshp | |- ( ph -> ( ( ._|_ ` ( ._|_ ` ( L ` G ) ) ) =/= V <-> ( ._|_ ` ( ._|_ ` ( L ` G ) ) ) e. Y ) ) |
11 | 1 2 3 6 5 7 8 9 | dochlkr | |- ( ph -> ( ( ._|_ ` ( ._|_ ` ( L ` G ) ) ) e. Y <-> ( ( ._|_ ` ( ._|_ ` ( L ` G ) ) ) = ( L ` G ) /\ ( L ` G ) e. Y ) ) ) |
12 | 10 11 | bitrd | |- ( ph -> ( ( ._|_ ` ( ._|_ ` ( L ` G ) ) ) =/= V <-> ( ( ._|_ ` ( ._|_ ` ( L ` G ) ) ) = ( L ` G ) /\ ( L ` G ) e. Y ) ) ) |