Figure 6

Convergence rate for \(u_{\mathrm{ex}}^{1,\beta }\) on a logarithmic scale using (41) with \(r=1\): \(\log _{2} E_{\mathrm{conv}}^{n}\)
Convergence rate for \(u_{\mathrm{ex}}^{1,\beta }\) on a logarithmic scale using (41) with \(r=1\): \(\log _{2} E_{\mathrm{conv}}^{n}\)