Tag: PDE Minimization of a functional for solving linear problems Jun 7, 2025 Understanding about the Lagrange multiplier method and its application in PDEs May 28, 2025 Two kinds of projections in solving linear problems May 20, 2025 General theory about the construction of preconditioning bilinear form in BEM Nov 16, 2024 Basic ideas of operator preconditioning Nov 11, 2024 Spectral equivalence Nov 6, 2024 Variational problems Oct 26, 2024 Summary of Green's identities Aug 2, 2024 Understanding about operator discretization Jul 24, 2024 From duality pairing to operator preconditioning Jul 13, 2024 Understanding about Riesz map Jul 11, 2024 Understanding about energy norm used in Galerkin method Jun 21, 2024 Fundamental theorems in PDE theory Jun 19, 2024 Understanding about ellipticity of operators Jun 7, 2024 Summary of Sobolev spaces and their norms Jul 22, 2022 Summary of multi-index convention for partial derivatives Feb 4, 2022