Superconvergence Analysis of Finite Element Method for a Second-Type Variational Inequality

Table 1

The error estimates for conforming FE scheme.

ℎ	1/2	1/4	1/8	1/16	1/32	1/64
Π^1ℎ𝑢−𝑢ℎℎ	2.1780𝐸−02	6.6596𝐸−03	1.8851𝐸−03	5.1760𝐸−04	1.3861𝐸−04	3.5405𝐸−05
order	/	1.8084	1.8796	1.9084	1.9324	1.9786
𝑢−Π^12ℎ𝑢ℎℎ	5.3923𝐸−03	1.5926𝐸−03	4.1215𝐸−04	1.0371𝐸−04	2.5691𝐸−05	6.1214𝐸−06
order	/	1.8401	1.9657	1.9935	2.0092	2.0486