Quasi-optimality of Petrov-Galerkin discretizations of parabolic problems with random coefficients
Quasi-optimality of Petrov-Galerkin discretizations of parabolic problems with random coefficients
复制标题
随机系数抛物型问题Petrov-Galerkin离散的拟最优性
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
M. Molteni
中科院分区:
文献类型:
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作者:
S. Larsson;Christian Mollet;M. Molteni
We consider a linear parabolic problem with random elliptic operator in the usual Gelfand triple setting. We do not assume uniform bounds on the coercivity and boundedness constants, but allow them to be random variables. The parabolic problem is studied in a weak space-time formulation, where we can derive explicit formulas for the inf-sup constants. Under suitable assumptions we prove existence of moments of the solution. We also prove quasi-optimal error estimates for piecewise polynomial Petrov-Galerkin discretizations.
影响因子:
0.8
作者:
Karsten Urban;Anthony T. Patera
通讯作者:
Anthony T. Patera