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Upper and Lower Bounds for Eigenvalues of the Elliptic Operator by Weak Galerkin Quadrilateral Spectral Element Methods.

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Title: Upper and Lower Bounds for Eigenvalues of the Elliptic Operator by Weak Galerkin Quadrilateral Spectral Element Methods.
Authors: Xu, Xiaofeng1 (AUTHOR), Pan, Jiajia1 (AUTHOR) panjiajia21@usst.edu.cn
Source: Axioms (2075-1680). Mar2026, Vol. 15 Issue 3, p195. 19p.
Database: Academic Search Ultimate
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ISSN:20751680
DOI:10.3390/axioms15030195