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Journal of Inequalities and Applications

Table 2 The approximative eigenvalues on \(\pmb{\bar{\Theta}=[0,\pi/2]^{3}}\)

From: A highly efficient spectral-Galerkin method based on tensor product for fourth-order Steklov equation with boundary eigenvalue

N

DOF

\(\boldsymbol {\chi_{1}}\)

\(\boldsymbol {\chi_{2}}\)

\(\boldsymbol {\chi_{5}}\)

10

729

2.989297949

4.966408489

6.533085863

15

2,744

2.989297401

4.966394295

6.532973331

20

6,859

2.989297388

4.966394153

6.532972744

25

13,824

2.989297388

4.966394148

6.532972712

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