§5.2 �Ým
5.2.1 �Ým�Vg
½Â 5.2.1 � X ´Dm, P X∗ = B(X, K),
Ù¥,
B(X, K) = {Xþ½Â��Nk.5¼},
¡ X∗ ´ X ��Ým.
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§5.2 �Ým
5.2.1 �Ým�Vg
½Â 5.2.1 � X ´Dm, P X∗ = B(X, K),
Ù¥,
B(X, K) = {Xþ½Â��Nk.5¼},
¡ X∗ ´ X ��Ým.
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5.2.2 Lp[a, b] ��Ým
½n 5.2.2 f ´ Lp[a, b] þ�k.5¼, K3
� y(t) ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
‖f‖ = ‖y‖q =
(∫ b
a
|y(t)|qdt
) 1
q
.
, éu ∀y ∈ Lq[a, b], þª½Â
Lp[a, b] þ�
k.5¼.
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5.2.2 Lp[a, b] ��Ým
½n 5.2.2 f ´ Lp[a, b] þ�k.5¼, K3
� y(t) ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
‖f‖ = ‖y‖q =
(∫ b
a
|y(t)|qdt
) 1
q
.
, éu ∀y ∈ Lq[a, b], þª½Â
Lp[a, b] þ�
k.5¼.
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5.2.2 Lp[a, b] ��Ým
½n 5.2.2 f ´ Lp[a, b] þ�k.5¼, K3
� y(t) ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
‖f‖ = ‖y‖q =
(∫ b
a
|y(t)|qdt
) 1
q
.
, éu ∀y ∈ Lq[a, b], þª½Â
Lp[a, b] þ�
k.5¼.
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5.2.2 Lp[a, b] ��Ým
½n 5.2.2 f ´ Lp[a, b] þ�k.5¼, K3
� y(t) ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
‖f‖ = ‖y‖q =
(∫ b
a
|y(t)|qdt
) 1
q
.
, éu ∀y ∈ Lq[a, b], þª½Â
Lp[a, b] þ�
k.5¼.
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5.2.2 Lp[a, b] ��Ým
½n 5.2.2 f ´ Lp[a, b] þ�k.5¼, K3
� y(t) ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
‖f‖ = ‖y‖q =
(∫ b
a
|y(t)|qdt
) 1
q
.
, éu ∀y ∈ Lq[a, b], þª½Â
Lp[a, b] þ�
k.5¼.
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5.2.2 Lp[a, b] ��Ým
½n 5.2.2 f ´ Lp[a, b] þ�k.5¼, K3
� y(t) ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
‖f‖ = ‖y‖q =
(∫ b
a
|y(t)|qdt
) 1
q
.
, éu ∀y ∈ Lq[a, b], þª½Â
Lp[a, b] þ�
k.5¼.
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5.2.2 Lp[a, b] ��Ým
½n 5.2.2 f ´ Lp[a, b] þ�k.5¼, K3
� y(t) ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
‖f‖ = ‖y‖q =
(∫ b
a
|y(t)|qdt
) 1
q
.
, éu ∀y ∈ Lq[a, b], þª½Â
Lp[a, b] þ�
k.5¼.
2/3
5 1
X = Lp[a, b], K X∗ = Lq[a, b].
= ∀f ∈ X∗, ∃y ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
= f Ú y éA.
3�åÓ�¿Âe, (Lp[a, b])∗ Ú Lq[a, b] �.
3/3
5 1
X = Lp[a, b], K X∗ = Lq[a, b].
= ∀f ∈ X∗, ∃y ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
= f Ú y éA.
3�åÓ�¿Âe, (Lp[a, b])∗ Ú Lq[a, b] �.
3/3
5 1
X = Lp[a, b], K X∗ = Lq[a, b].
= ∀f ∈ X∗, ∃y ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
= f Ú y éA.
3�åÓ�¿Âe, (Lp[a, b])∗ Ú Lq[a, b] �.
3/3
5 1
X = Lp[a, b], K X∗ = Lq[a, b].
= ∀f ∈ X∗, ∃y ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
= f Ú y éA.
3�åÓ�¿Âe, (Lp[a, b])∗ Ú Lq[a, b] �.
3/3
5 1
X = Lp[a, b], K X∗ = Lq[a, b].
= ∀f ∈ X∗, ∃y ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
= f Ú y éA.
3�åÓ�¿Âe, (Lp[a, b])∗ Ú Lq[a, b] �.
3/3
5 1
X = Lp[a, b], K X∗ = Lq[a, b].
= ∀f ∈ X∗, ∃y ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
= f Ú y éA.
3�åÓ�¿Âe, (Lp[a, b])∗ Ú Lq[a, b] �.
3/3
5 1
X = Lp[a, b], K X∗ = Lq[a, b].
= ∀f ∈ X∗, ∃y ∈ Lq[a, b], ��
f(x) =
∫ b
a
x(t)y(t)dt,
= f Ú y éA.
3�åÓ�¿Âe, (Lp[a, b])∗ Ú Lq[a, b] �.
3/3