

![0_image_0.png](0_image_0.png)

, x

$${\boldsymbol{x}}$$
$$\begin{array}{c c c}{{P_{\ t}}}&{{}}&{{}}&{{}}\\ {{}}&{{}}&{{}}&{{t}}\\ {{}}&{{}}&{{}}&{{}}\\ {{}}&{{}}&{{}}&{{P}}\end{array}\qquad x$$
$$t\quad=\quad t$$

t

$${\boldsymbol{I}}^{\mathsf{P}}$$

t

N t t t vars t  - vars t P  t P t P t t t  t t t C P C t vars C  Q  vars t            vars C  Q  vars t t C  C t t C P i P N C C t t  t vars t   C vars t t t P k k P k P t P t k  x vars t t x P k k xx k P t P t 
x P

$${\boldsymbol{t}}$$
$$\begin{array}{r l r l}{t}&{{}}&{t{}}&{v a r s\ t}&{{}-\ v a r s\ t}\\ {}&{}&{}&{P_{\ t}}&{}&{t}\end{array}$$

k
