Table 2 Example 2 : Numerical results for \(\pmb{p=1}\)

n

\(\boldsymbol {\dim S_{n}}\)

\(\boldsymbol {\|u-u_{n}\|}\)

\(\boldsymbol {\|u-u_{1,n-1}\|}\)

\(\boldsymbol {\|u-u_{2,n-2}\|}\)

\(\boldsymbol {\|u-u_{3,n-3}\|}\)