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Theory and Modern Applications

Table 3 Curvatures 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

Mean curvature

Gauss curvature

x = 0

−0.00423076

−0.0000174161

x = 0.1

−0.0142516

−0.000039501

x = 0.2

−0.034402

−0.0000723291

x = 0.3

−0.0699955

−0.000119721

x = 0.4

−0.130085

−0.000190356

x = 0.5

−0.233077

−0.000304767

x = 0.6

−0.423579

−0.000517959

x = 0.7

−0.838338

−0.00101754

x = 0.8

−2.11606

−0.00283336

x = 0.9

−14.4824

−0.0304277

x  = 0.94

−1408.05

−12.6644

x = 1

−19.2403

0.0148218