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Convergence of the spectral Galerkin method for the stochastic reaction-diffusion-advection equation
详细信息
查看全文
作者:
Li
Yang
a
;
li
.yang@inria.fr" class="auth_mail" title="E-mail the corresponding author
;
Yanzhi Zhang
b
;
zhangyanz@mst.edu" class="auth_mail" title="E-mail the corresponding author
关键词:
Stochastic reaction&ndash
;
diffusion&ndash
;
advection equation
;
Galerkin appro
x
imation
;
Convergence rate
;
Allen
&ndash
;
Cahn equation
;
Burgers' equation
刊名:Journal of Mathematical Analysis and App
li
cations
出版年:2017
出版时间:15 February 2017
年:2017
卷:446
期:2
页码:1230-1254
全文大小:1525 K
文摘
We study the convergence of the spectral Galerkin method in solving the stochastic reaction–diffusion–advection equation under different
Li
pschitz conditions of the reaction function
f
. When
f
x
A0;
is globally (locally) Lipschitz continuous, we prove that the spectral Galerkin appro
x
imation strongly (weakly) converges to the mild solution of the stochastic reaction–diffusion–advection equation, and the rate of convergence in
xt sti
x
Support mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0022247X16305315&_mathId=si1.gif&_user=111111111&_pii=S0022247X16305315&_rdoc=1&_issn=0022247X&md5=b229f50c5d287c8a233c3d3f60880326" title="C
li
ck to view the MathML source">H
r
H
r
-norm is
lineImage" height="23" width="59" alt="View the MathML source" title="View the MathML source" src="/sd/grey_p
x
l.gif" data-in
li
mgeid="1-s2.0-S0022247X16305315-si18.gif">
lign:bottom" width="59" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0022247X16305315-si18.gif">
(
1
2
−
r
)
−
, for any
lineImage" height="23" width="63" alt="View the MathML source" title="View the MathML source" src="/sd/grey_p
x
l.gif" data-in
li
mgeid="1-s2.0-S0022247X16305315-si17.gif">
lign:bottom" width="63" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0022247X16305315-si17.gif">
r
∈
[
0
,
1
2
)
(
lineImage" height="23" width="104" alt="View the MathML source" title="View the MathML source" src="/sd/grey_p
x
l.gif" data-in
li
mgeid="1-s2.0-S0022247X16305315-si23.gif">
lign:bottom" width="104" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0022247X16305315-si23.gif">
r
∈
(
1
2
−
1
2
d
,
1
2
)
). The convergence analysis in the local Lipschitz case is ch
allen
ging, especially in the presence of an advection term. We propose a new approach based on the truncation techniques, which can be easily app
li
ed to study other stochastic partial differential equations. Numerical simulations are also provided to study the convergence of Galerkin appro
x
imations.
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