
ψ
s
=0 ψ
s
=0
ϕ
s
(ψ
s
)
ψ
s
(x
1
,...,x
n
,ω
1
,...,ω
µ
)=0,s=1, 2,...,m,
(n − m)
ψ
s
=0
ϕ
s
(ψ
s
)
ψ
s
ϕ
s
(ψ
s
)
T
s
˙
ψ
s
(t)+
r
k=1
α
ks
ψ
k
s
=0,s=1.2....,m.
ψ
s
=0
T
s
˙
ψ
s
(t)+α
1s
ψ
s
+ α
rs
ψ
r
s
=0,s=1, 2,...,m, r =2, 3,...,
ψ
r−1
s
(t)=
α
1s
α
1s
ψ
1−r
s0
+ α
rs
exp(r − 1)
α
1s
T
s
t − α
rs
t → 0 α
1s
> 0 α
rs
> 0 ψ
s
=0
r =2 α
1s
< 0 α
rs
> 0
ψ
s
=
|α
1s
|
α
rs
ψ
s
ψ
s
= B
s
s =1,...,m ψ
s
=0