Crank-Nicolson Fully Discrete 𝐻¹-Galerkin Mixed Finite Element Approximation of One Nonlinear Integrodifferential Model

Table 3

The errors of ‖𝜎^𝐽−𝑄^𝐽‖ at different time.

ℎ=𝜏	Time
	𝑡=0.2		𝑡=0.4		𝑡=0.6		𝑡=0.8
	Error	Order	Error	Order	Error	Order	Error	Order
1/20	1.9532𝑒−004	∖	3.5339𝑒−004	∖	5.4745𝑒−004	∖	7.6700𝑒−004	∖
1/40	4.7504𝑒−005	2.0397	8.6496𝑒−005	2.0306	1.3441𝑒−004	2.0261	1.8884𝑒−004	2.0221
1/80	1.1699𝑒−005	2.0217	2.1381𝑒−005	2.0163	3.3284𝑒−005	2.0137	4.6818𝑒−005	2.0120