,
(2.19.1) |
.
(2.19.1) .
aij , , , , .
, r,
. | (2.19.2) |
, ,
. | (2.19.3) |
,
, | (2.20.1) |
a, b, c (. 2.20.1).
(2.20.1) . , , . , , , .. . (2.20.1) .
,
. | (2.20.2) |
. 2.20.1
,
, | (2.21.1) |
(2.21.2) |
. 2.21.1 | . 2.21.2 |
, (2.21.1) (. 2.21.1); , (2.21.2), (. 2.21.2). a, b, c . (2.26.1) (2.26.2) .
Oz . (. 2.21.1) , () . (. 2.21.1). , a b , Oz.
,
. | (2.21.3) |
Oz (. 2.21.2). , . , a b , Oz.
|
|
. | (2.21.4) |
,
, | (2.22.1) |
, | (2.22.2) |
p q , .
, (2.22.1), (. 2.22.1); , (2.22.2), (. 2.22.2). (2.22.1) (2.22.2) .
Oz. . z=h, h>0 , . , p=q, , (2.22.1), ( Oz).
. | (2.22.3) |
. 2.22.1 | . 2.22.2 |
I Oz. z=h , , h>0, , h<0. .