j***e
发帖数: 72 | 1 参见附件图。
Now Pn(x) is H-measureable, 后面那个and怎么冒出来的？
谢谢 |
j***e
发帖数: 72 | 2 突然间，我明白了，
就像矢量的积一样。Y和 X-P(x)正交。
【在 j***e 的大作中提到】
: 参见附件图。
: Now Pn(x) is H-measureable, 后面那个and怎么冒出来的？
: 谢谢
|
e**********n
发帖数: 359 | 3 It comes from the definition of "projection"
P_N(X) is the projection of X in N, so X-P_N(X) is perpendicular to any
vector in N.
The integral \int_\Omega ... dP is the inner product on the Hilbert space L^
2(P). |
j***e
发帖数: 72 | 4 Thanks for the more detailed explanation.
L^
【在 e**********n 的大作中提到】
: It comes from the definition of "projection"
: P_N(X) is the projection of X in N, so X-P_N(X) is perpendicular to any
: vector in N.
: The integral \int_\Omega ... dP is the inner product on the Hilbert space L^
: 2(P).
|
