Table 5 The order of convergence in ‘nonsingular’ part

From: Approximation on the hexagonal grid of the Dirichlet problem for Laplace’s equation

(h,N)	${∥ ϵ_{h} ∥}_{Ω^{N S}}$	$R_{Ω^{N S}}^{m}$
(2⁻⁴,40)	9.9742 × 10⁻⁴	27.9237
(2⁻⁵,60)	3.57195 × 10⁻⁵
(2⁻⁵,100)	8.2649 × 10⁻⁷	15.3796
(2⁻⁶,100)	5.373923 × 10⁻⁸
(2⁻⁶,100)	5.373923 × 10⁻⁸	15.7215
(2⁻⁷,125)	3.418192 × 10⁻⁹

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