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01 natural sciences 492 estimates of eigenvalues in context of pdes 449 0101 mathematics 415 finite element, rayleigh-ritz and galerkin methods for boundary value problems involving pdes 266 error bounds for boundary value problems involving pdes 120 0103 physical sciences 116 mehr ... eigenvalues 106 eigenvalue problem 86 laplace operator, helmholtz equation (reduced wave equation), poisson equation 83 nonlinear eigenvalue problems and nonlinear spectral theory for pdes 81 02 engineering and technology 79 applications to the sciences 76 numerical examples 76 eigenfunctions 72 convergence 69 numerical computation of eigenvalues and eigenvectors of matrices 68 finite difference methods for boundary value problems involving pdes 64 stability and convergence of numerical methods for boundary value problems involving pdes 60 numerical solution of eigenvalue problems involving ordinary differential equations 53 finite element 50 finite element method 49 numerical results 46 boundary value problems for second-order elliptic equations 41 multigrid methods 41 closed and approximate solutions to the schrodinger, dirac, klein-gordon and other equations of quantum mechanics 40 domain decomposition for boundary value problems involving pdes 40 eigenvalue problems 39 pdes in connection with optics and electromagnetic theory 39 eigenvalue 37 spectral, collocation and related methods for boundary value problems involving pdes 37 weniger ...

elsevier bv 185 springer science and business media llc 107 society for industrial & applied mathematics (siam) 79 wiley 65 edp sciences 22 american mathematical society (ams) 20 mehr ... russian academy of sciences - ras (rossiiskaya akademiya nauk - ran), moscow; nauka, moscow 20 springer us, new york, ny; pleiades publishing, new york, ny; maik ``nauka/interperiodica'', moscow 20 iop publishing 15 walter de gruyter gmbh 14 kyivs'kyi universytet im. tarasa shevchenka, kyiv 13 consultants bureau, new york 12 american mathematical society (ams), providence, ri 11 jstor 11 taylor \& francis, philadelphia, pa 11 global science press, hong kong; chinese academy of sciences, institute of computational mathematics, beijing 10 john wiley \& sons (wiley-vch), berlin 10 lybid', kiev 9 springer us, new york, ny; pleiades publishing (allerton press), new york, ny; maik ``nauka/interperiodica'', moscow 9 cambridge university press (cup) 8 oxford university press (oup) 8 russian academy of sciences - ras (rossiiskaya akademiya nauk - ran), siberian branch (sibirskoe otdelenie), novosibirsk 7 taylor \& francis, abingdon, oxfordshire 6 bulgarian academy of sciences - bas (balgarska akademiya na naukite - ban), sofia 5 chinese academy of sciences, institute of computational mathematics and scientific/engineering computing, beijing 5 gauthier-villars, paris 5 russian academy of sciences - ras (rossiiskaya akademiya nauk - ran), moscow; nauka, moscow; national academy of sciences of belarus - nasb (natsional'naya akademiya nauk belarusi - nan belarusi), institute of mathematics (institut matematiki), minsk 5 world scientific pub co pte ltd 5 academy of sciences of the ukrainian soviet socialist republic - ukrssr (akademiya nauk ukrainskoi ssr) 4 izdatel'stvo ylym, ashkhabad 4 weniger ...

english 481 undetermined 408 german 2 czech 1 french 1 italian 1

OpenAIRE 893 Springer Nature Journals 1