Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.

• On the convergence of the finite element approximation of eigenfrequencies and eigenvectors to Maxwell's boundary value problem 

  Neittaanmäki, Pekka; Picard, Rainer (Suomalainen tiedeakatemia, 1981)

• Finite element approximation of vector fields given by curl and divergence 

  Neittaanmäki, Pekka; Saranen, Jukka (Wiley, 1981)

• On Finite Element Approximation of the Gradient for Solution of Poisson Equation 

  Neittaanmäki, Pekka; Saranen, Jukka (Springer, 1981)

  A nonconforming mixed finite element method is presented for approximation of ∇w with Δw=f,w| r =0. Convergence of the order∥∇w−uh∥0,Ω=O(h2) is proved, when linear finite elements are used. Only the standard regularity ...

• Finite element approximation for a div-rot system with mixed boundary conditions in non-smooth plane domains 

  Křížek, Michal; Neittaanmäki, Pekka (Československá akademie věd. Matematický ústav., 1984)

  The authors examine a finite element method for the numerical approximation of the solution to a div-rot system with mixed boundary conditions in bounded plane domains with piecewise smooth boundary. The solvability of the ...

• On different finite element methods for approximating the gradient of the solution to the helmholtz equation 

  Haslinger, Jaroslav; Neittaanmäki, Pekka (North-Holland, 1984)

  We consider the numerical solution of the Helmholtz equation by different finite element methods. In particular, we are interested in finding an efficient method for approximating the gradient of the solution. We first ...