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A skeletal finite element method for elliptic interface eigenvalue problems
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DOI：10.1016/j.cnsns.2026.109916.png)
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Abstract
En 中文
• A novel skeletal FEM framework is proposed for elliptic interface eigenvalue problems. • Comprehensive theoretical analysis and extensive numerical validation are presented. • The lower bound property is rigorously proved for straight interface configurations. • Optimal convergence rates are established and verified for curved interface cases.
Keywords:
skeletal finite element method
elliptic interface eigenvalue problems
lower bound property
optimal convergence rates
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