00764nam a2200169Ia 450000500170000000800410001702000130005808200150007110000240008624500530011026000180016330000180018150502680019994200080046799900170047595201020049220241211205653.0241211s1974    xx            000 0 und d  afcnm2742  a515.3I/W42  aWeinberger, Hans F. 0aVariational Methods for Eigenvalue Approximation  aU.S.A :c1974  a159 páginas  a1.Prologue: why study eigenvalues. 2.The setting: linear vector spaces and their properties. 3.The existence and characterization of eigenvalues. 4.Improvable bounds for eigenvalues. 5.Eigenvector approximation. 6.Finite difference equations. 7.Some other bounds.  yLIB  c51962d51962  00104070aBE-FCNMbBE-FCNMcTPd2019-03-26eDonacionfBuenoo515.3I/W42pFCNM4258yLIBzInterno