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On the solution of Dirichlet’s problem of complex Monge-Amp`ere ...
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第二类Cartan-Hartogs域上复Monge-Amp`ere 方程 Dirichlet 问题的解 ,殷慰萍,殷晓岚,Complex Monge-Amp`ere equation is a nonlinear equation with high degree, therefore to get its solution is very difficult. In present paper how to get the solution of Dirichlet’
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On the solution of Dirichlet’s problem of
complex Monge-Amp`ere equation on
Cartan-Hartogs domain of the second type*
1
Weiping YIN
1
Xiaolan YIN
2,3
1. School of Mathematical Sciences, Capital Normal University, Beijing
100037, China. e-mail: wyin@mail.cnu.edu.cn Tel: 86-10-68902600
2. Technology Center of Software Engineering, Institute of Software, Chinese
Academy of Sciences, Beijing 100080, China.
3. Graduate University of Chinese Academy of Sciences, Beijing 100049,
China.
Abstract: Complex Monge-Amp`ere equation is a nonlinear equation with
high degree, therefore to get its solution is very difficult. In present paper how
to get the solution of Dirichlet’s problem of Complex Monge-Amp`ere equation
on the Cartan-Hartogs domain of the second type is discussed by using the
analytic method. Firstly, the complex Monge-Amp`ere equation is reduced to
the nonlinear ordinary differential equation, then the solution of the Dirichlet’s
problem of complex Monge-Amp`ere equation is reduced to the solution of two
point boundary value problem of the nonlinear second-order ordinary differ-
ential equation. Secondly, the solution of the Dirichlet’s problem is given in
semi-explicit formula, and under the special case the exact solution is obtained.
These results may be helpful for the numerical method of Dirichlet’s problem
of complex Monge-Amp`ere equation on the Cartan-Hartogs domain.
Key Words Complex Monge-Amp`ere equation, Dirichlet’s problem,
Cartan-Hartogs domain, Kaehler-Einstein metric.
MR(1991)Subject Classification: 65E05, 32C17, 53C55, 35G30.
1
*This project was supported by the National Natural Science Foundation of China(Grant
No.10771144).
1
http://www.paper.edu.cn
1 Introduction
The Monge-Amp`ere equations are in general very hard to solve, but have been
used in many areas such as deferential geometry, variational method, optimiza-
tion, transfers problem and so on. Based on the existence of the solution of
certain type of complex Monge-Amp`ere equation, S.Y.Cheng, N.M. Mok, S.T.
Yau proved([1,2]) that there exists unique complete Kaehler-Einstein metric on
any bounded pseudoconvex domain D in C
n
. If this Kaehler-Einstein metric is
given by
ds
2
=
X
∂
2
g
∂z
i
∂z
j
dz
i
dz
j
,
actually they proved that the following Dirichlet’s problem of the complex
Monge-Amp`ere equation
det
∂
2
g
∂z
i
∂z
j
= e
(n+1)g
z ∈ D
g = ∞ z ∈ ∂D
exists unique solution. But they have not got the solution in explicit formula. In
present pape r the authors try to get the explicit solution of Dirichlet’s problem
of complex Monge-Amp`ere equation on Cartan-Hartogs domain of the s ec ond
type, which is defined as follows:
Y
II
= Y
II
(N
2
, p; K) := {W ∈ C
N
2
, Z ∈ R
II
(p) : |W |
2K
< det(I−ZZ
t
), K > 0},
where R
II
(p) is the classical domain of the second type, that is
R
II
(p) = {Z ∈ C
p(p+1)
2
: I − Z
Z
t
> 0},
where Z is symmetric matrix with p order, Z > 0 means that Z is the positive
definite matrix,
Z denotes the conjugate of Z, Z
t
indicates the transpose of Z,
2
http://www.paper.edu.cn
det is the abbreviation of determinant. In fact the explicit solution of follow-
ing Dirichlet’s problem of complex Monge-Amp`ere equation is discussed in this
paper:
det
∂
2
g
∂z
i
∂z
j
1≤i,j≤N
= e
(N+1)g
z ∈ Y
II
,
g = ∞ z ∈ ∂Y
II
,
(1)
where N = N
2
+
p(p+1)
2
is the complex dimension of Y
II
, and suppose
(Z, W ) ∈ Y
II
, W = (w
1
, w
2
, . . . , w
N
2
),
Z = Z
t
=
z
11
1
√
2
z
12
···
1
√
2
z
1p
1
√
2
z
21
z
22
···
1
√
2
z
2p
.
.
.
.
.
.
.
.
.
.
.
.
1
√
2
z
p1
1
√
2
z
p2
··· z
pp
let
Z
1
= (z
1
, z
2
, . . . , z
p(p+1)
2
) = (z
11
, . . . , z
1p
, z
22
, . . . , z
2p
, . . . , z
p,p
),
Z
2
= (z
p(p+1)
2
+1
, z
p(p+1)
2
+2
, . . . , z
N
) = (w
1
, w
2
, . . . , w
N
2
),
then the point (Z, W ) can b e denoted by a vector z with N entries, that is
z = (Z
1
, Z
2
) = (z
1
, z
2
, . . . , z
p(p+1)
2
, z
p(p+1)
2
+1
, z
p(p+1)
2
+2
, . . . , z
N
).
Due to its explicit formula the Bergman kernel function of Y
II
is Bergman
exhaustion[3], hence the domain Y
II
is the pseudoconvex domain. Therefore
the solution of problem (1) is existent and unique. In general domain Y
II
is the
nonhomogeneours domain.
In present paper the authors prove that the solution of problem (1) can be
got in semi-explicit formula, and under the special case the explicit solution is
also obtained. The main result of present paper can be stated as follows:
3
http://www.paper.edu.cn
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