Advances in Continuous and Discrete Models

Theory and Modern Applications

Table 2 Classification of \(r(x,t)\) surface at node points

From: Solutions of the fractional combined KdV–mKdV equation with collocation method using radial basis function and their geometrical obstructions

Node points	〈N,N〉	Class
x = 0	−1166.57	spacelike
x = 0.1	−233.172	spacelike
x = 0.2	−73.2727	spacelike
x = 0.3	−29.2972	spacelike
x = 0.4	−13.4868	spacelike
x = 0.5	−6.72612	spacelike
x = 0.6	−3.46118	spacelike
x = 0.7	−1.73585	spacelike
x = 0.8	−0.758654	spacelike
x = 0.9	−0.173935	spacelike
x ≈ 0.94	0	lightlike
x = 1	0.191883	timelike

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