1 Introduction
2 Some preliminaries
3 The operator formulations and error estimates
3.1 Operator formulations
3.2 Error estimates
4 Matrix formulation of the spectral-Galerkin approximation
5 Numerical experiments
N
|
\(\boldsymbol{\lambda_{1}}\)
|
\(\boldsymbol{\lambda_{2}}\)
|
\(\boldsymbol{\lambda_{4}}\)
|
---|---|---|---|
10 | 104.3631056 | 452.0074329 | 1216.451916 |
15 | 104.3631056 | 452.0045101 | 1216.407600 |
20 | 104.3631056 | 452.0045101 | 1216.407600 |
N
|
\(\boldsymbol{\lambda_{1}}\)
|
\(\boldsymbol{\lambda_{2}}\)
|
\(\boldsymbol{\lambda_{4}}\)
|
---|---|---|---|
10 | 237.7210683 | 769.9765197 | 1818.29231 |
15 | 237.7210675 | 769.9634832 | 1818.167926 |
20 | 237.7210675 | 769.9634832 | 1818.167924 |
25 | 237.7210675 | 769.9634832 | 1818.167924 |