let K be Field; for V1 being finite-dimensional VectSp of K
for p being FinSequence of K
for B1 being FinSequence of V1
for W1 being Subspace of V1
for B2 being FinSequence of W1 st B1 = B2 holds
lmlt (p,B1) = lmlt (p,B2)
let V1 be finite-dimensional VectSp of K; for p being FinSequence of K
for B1 being FinSequence of V1
for W1 being Subspace of V1
for B2 being FinSequence of W1 st B1 = B2 holds
lmlt (p,B1) = lmlt (p,B2)
let p be FinSequence of K; for B1 being FinSequence of V1
for W1 being Subspace of V1
for B2 being FinSequence of W1 st B1 = B2 holds
lmlt (p,B1) = lmlt (p,B2)
let B1 be FinSequence of V1; for W1 being Subspace of V1
for B2 being FinSequence of W1 st B1 = B2 holds
lmlt (p,B1) = lmlt (p,B2)
let W1 be Subspace of V1; for B2 being FinSequence of W1 st B1 = B2 holds
lmlt (p,B1) = lmlt (p,B2)
let B2 be FinSequence of W1; ( B1 = B2 implies lmlt (p,B1) = lmlt (p,B2) )
assume A1:
B1 = B2
; lmlt (p,B1) = lmlt (p,B2)
set M2 = lmlt (p,B2);
set M1 = lmlt (p,B1);
A2:
dom (lmlt (p,B1)) = (dom p) /\ (dom B1)
by Lm1;
A3:
dom (lmlt (p,B2)) = (dom p) /\ (dom B2)
by Lm1;
now for i being Nat st i in dom (lmlt (p,B1)) holds
(lmlt (p,B1)) . i = (lmlt (p,B2)) . ilet i be
Nat;
( i in dom (lmlt (p,B1)) implies (lmlt (p,B1)) . i = (lmlt (p,B2)) . i )assume A4:
i in dom (lmlt (p,B1))
;
(lmlt (p,B1)) . i = (lmlt (p,B2)) . i
i in dom p
by A2, A4, XBOOLE_0:def 4;
then A5:
p . i = p /. i
by PARTFUN1:def 6;
A6:
i in dom B1
by A2, A4, XBOOLE_0:def 4;
then A7:
B2 . i = B2 /. i
by A1, PARTFUN1:def 6;
A8:
B1 . i = B1 /. i
by A6, PARTFUN1:def 6;
hence (lmlt (p,B1)) . i =
(p /. i) * (B1 /. i)
by A4, A5, FUNCOP_1:22
.=
(p /. i) * (B2 /. i)
by A1, A6, A8, PARTFUN1:def 6, VECTSP_4:14
.=
(lmlt (p,B2)) . i
by A1, A2, A3, A4, A5, A7, FUNCOP_1:22
;
verum end;
hence
lmlt (p,B1) = lmlt (p,B2)
by A1, A3, Lm1; verum