Xi 2- Pi 1 - Pi (i = 2, , n); X 1 1- 1 2, .. 2- . ,
X 1= A 1 (8)
(.. 2- P 1 , 1- ). , A 1 + A 2 > X 1+ B 1 ,
X 2= A 1 + A 2 B 1 X 1> 0; (9)
A 1 + A 2 ≤ X 1+ B 1 , X 2= 0, - X 2= max{ A 1 + A 2 B 1, 0}.
1.
Xr = max{ , 0} (r = 1, , n). (10)
. + , , , 2- - (r 1) ; , 1- r . -, 2- Pr, - , (10) ■
2. a = max{0, c d }.
a + d = max{ c, d }. (11)
, c ≥ d a = c d + d = =max{ c, d }. < d, =0 + d = d =max{ c, d }■
3. r = 1, 2, , n
= max{ , , , A 1}. (12)
. r. (12) r. , r +1.
a = Xr +1, c = , d = , (13)
, (10) r +1, a = max{0, c d }, , (11) a + d = max{ c, d }.
(13)
Xr +1+ = max{ , }
= max{ , }. (14)
(14) . , , (12) (14).
= max{ , max{ , , , A 1}} =
max{ , , , , A 1}. (15)
(15)
max{ a, max{ b 1, , bp }} = max{ a, b 1, , bp }.
(15) ,
= max{ , , , A 1}. (16)
(16) (12) r r +1. r =1 (8), ■
r = 1, , n
Dr = ,
Lr = , (17)
(12) r = n
Dn = . (18)
Dn , .
1 - . , P 1, , Pk, Pk +1, , Pn, P 1, , Pk +1, Pk, , Pn, (): Pk Pk +1. , , .
(17) , = r ≠ k, k +1 ( ). (18)
< (19)
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max{ Lk, Lk +1} < max{ , }. (20)
4. (20) (2a):
min{ Ak, Bk +1} < min{ Ak +1, Bk }. (2a)
. Lr (. (17)) r = k
max{ Lk, Lk +1} = max{ , }, (21)
max{ , } = max{ , }. (21 )
(21) (21 ) Q = . -
Q + max{ Lk, Lk +1} = max{ Q + Lk, Q + Lk +1}= max{ Ak +1, Bk }= min{ Ak +1, Bk }, (22)
Q + max{ , }= max{ Q + , Q + }= max{ Ak, Bk +1}= min{ Ak, Bk +1}. (22 )
(21) (22) (20)
min{ Ak +1, Bk } < min{ Ak, Bk+ 1}, (2) ■
(19) (20), 4 (19) (2a). (19) , , 1 ■