Matculevich, Svetlana; Neittaanmäki, Pekka; Repin, Sergey A posteriori error estimates for time-dependent reaction-diffusion problems based on the Payne-Weinberger inequality. (English) Zbl 1334.35126 Discrete Contin. Dyn. Syst. 35, No. 6, 2659-2677 (2015). MSC: 35K57 65M15 65N30 35B45 PDFBibTeX XMLCite \textit{S. Matculevich} et al., Discrete Contin. Dyn. Syst. 35, No. 6, 2659--2677 (2015; Zbl 1334.35126) Full Text: DOI arXiv
Baskin, L.; Kabardov, M.; Neittaanmäki, P.; Sarafanov, O. Asymptotic and numerical study of electron flow spin polarization in 2D waveguides of variable cross-section in the presence of magnetic field. (English) Zbl 1311.35240 Math. Methods Appl. Sci. 37, No. 7, 1072-1092 (2014). MSC: 35Q40 81Q37 35B40 65N30 35P20 35P25 82D77 65N35 PDFBibTeX XMLCite \textit{L. Baskin} et al., Math. Methods Appl. Sci. 37, No. 7, 1072--1092 (2014; Zbl 1311.35240) Full Text: DOI
Neittaanmäki, Pekka; Repin, Sergey Guaranteed error bounds for conforming approximations of a Maxwell type problem. (English) Zbl 1186.65145 Fitzgibbon, William (ed.) et al., Applied and numerical partial differential equations. Scientific computing in simulation, optimization and control in a multidisciplinary context. Dordrecht: Springer (ISBN 978-90-481-3238-6/hbk; 978-90-481-3239-3/ebook). Computational Methods in Applied Sciences 15, 199-211 (2010). MSC: 65N15 78A25 35Q61 65N30 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{S. Repin}, Comput. Methods Appl. Sci. 15, 199--211 (2010; Zbl 1186.65145) Full Text: DOI
Neittaanmäki, P.; Repin, S.; Turchyn, P. New a posteriori error indicator in terms of linear functionals for linear elliptic problems. (English) Zbl 1136.65103 Russ. J. Numer. Anal. Math. Model. 23, No. 1, 77-87 (2008). MSC: 65N15 35J25 65N30 65N12 PDFBibTeX XMLCite \textit{P. Neittaanmäki} et al., Russ. J. Numer. Anal. Math. Model. 23, No. 1, 77--87 (2008; Zbl 1136.65103) Full Text: DOI
Frolov, M. E.; Neittaanmäki, Pekka; Repin, S. I. Guaranteed functional error estimates for the Reissner-Mindlin plate problem. (Russian, English) Zbl 1125.74028 Probl. Mat. Anal. 31, 159-166 (2005); translation in J. Math. Sci., New York 132, No. 4, 553-561 (2006). MSC: 74K20 35Q72 65N15 65N30 PDFBibTeX XMLCite \textit{M. E. Frolov} et al., Probl. Mat. Anal. 31, 159--166 (2005; Zbl 1125.74028); translation in J. Math. Sci., New York 132, No. 4, 553--561 (2006)
Neittaanmäki, Pekka; Korotov, Sergey; Martikainen, Janne A posteriori error estimation of “quantities of interest” on “quantity-adapted” meshes. (English) Zbl 1060.65658 Křižek, Michal (ed.) et al., Conjugate gradient algorithms and finite element methods. Berlin: Springer (ISBN 3-540-21319-8/hbk). Scientific Computation, 171-181 (2004). MSC: 65N15 65N30 35J25 35J05 PDFBibTeX XMLCite \textit{P. Neittaanmäki} et al., in: Conjugate gradient algorithms and finite element methods. Berlin: Springer. 171--181 (2004; Zbl 1060.65658)
Korotov, Sergey; Neittaanmäki, Pekka; Repin, Sergey A posteriori error estimation in terms of linear functionals for boundary value problems of elliptic type. (English) Zbl 1056.65104 Feistauer, M. (ed.) et al., Numerical mathematics and advanced applications. Proceedings of ENUMATH 2003, the 5th European conference on numerical mathematics and advanced applications, Prague, Czech Republic, August 18–22, 2003. Berlin: Springer (ISBN 3-540-21460-7/hbk). 587-595 (2004). MSC: 65N15 65N30 35J25 PDFBibTeX XMLCite \textit{S. Korotov} et al., in: Numerical mathematics and advanced applications. Proceedings of ENUMATH 2003, the 5th European conference on numerical mathematics and advanced applications, Prague, Czech Republic, August 18--22, 2003. Berlin: Springer. 587--595 (2004; Zbl 1056.65104)
Arnăutu, Viorel; Neittaanmäki, Pekka Optimal control from theory to computer programs. (English) Zbl 1056.49001 Solid Mechanics and Its Applications 111. Dordrecht: Kluwer Academic Publishers (ISBN 1-4020-1771-5/hbk). x, 324 p. (2003). Reviewer: Andrew C. Eberhard (Melbourne) MSC: 49-02 49-04 65K10 49J20 49J40 65P99 65M60 90C51 49J55 90C25 47J20 35B37 65N30 PDFBibTeX XMLCite \textit{V. Arnăutu} and \textit{P. Neittaanmäki}, Optimal control from theory to computer programs. Dordrecht: Kluwer Academic Publishers (2003; Zbl 1056.49001)
Korotov, S.; Neittaanmäki, P.; Repin, S. A posteriori error estimation of goal-oriented quantities by a superconvergence patch recovery. (English) Zbl 1039.65075 J. Numer. Math. 11, No. 1, 33-59 (2003). Reviewer: J. C. Coyle (West Long Branch) MSC: 65N15 65N30 65N12 35J25 PDFBibTeX XMLCite \textit{S. Korotov} et al., J. Numer. Math. 11, No. 1, 33--59 (2003; Zbl 1039.65075)
Křížek, Michal; Liu, Liping; Neittaanmäki, Pekka On harmonic and biharmonic finite elements. (English) Zbl 0994.65117 Neittaanmäki, Pekka (ed.) et al., Finite element methods. Three-dimensional problems. Proceedings of international conference, Jyväskylä, Finland, June 28-July 1, 2000. Tokyo: Gakkotosho. GAKUTO Int. Ser., Math. Sci. Appl. 15, 143-151 (2001). MSC: 65N30 35J05 35J40 65N15 PDFBibTeX XMLCite \textit{M. Křížek} et al., GAKUTO Int. Ser., Math. Sci. Appl. 15, 143--151 (2001; Zbl 0994.65117)
Neittaanmäki, P.; Repin, S. I. A posteriori error estimates for boundary-value problems related to the biharmonic operator. (English) Zbl 0986.65101 East-West J. Numer. Math. 9, No. 2, 157-178 (2001). Reviewer: Karel Najzar (Praha) MSC: 65N15 65N30 35J40 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{S. I. Repin}, East-West J. Numer. Math. 9, No. 2, 157--178 (2001; Zbl 0986.65101)
Korotov, Sergey; Křížek, Michal; Neittaanmäki, Pekka Weakened acute type condition for tetrahedral triangulations and the discrete maximum principle. (English) Zbl 1001.65125 Math. Comput. 70, No. 233, 107-119 (2001). MSC: 65N30 35J05 65N50 PDFBibTeX XMLCite \textit{S. Korotov} et al., Math. Comput. 70, No. 233, 107--119 (2001; Zbl 1001.65125) Full Text: DOI
Korotov, S.; Neittaanmäki, P.; Křížek, M. On discrete maximum principle for tetrahedral elements satisfying a weakened acute type condition. (English) Zbl 0972.65086 Neittaanmäki, Pekka (ed.) et al., ENUMATH 99. Numerical mathematics and advanced applications. Proceedings of the 3rd European conference, Jyväskylä, Finland, July 26-30, 1999. Singapore: World Scientific. 587-592 (2000). MSC: 65N30 35J05 PDFBibTeX XMLCite \textit{S. Korotov} et al., in: ENUMATH 99. Numerical mathematics and advanced applications. Proceedings of the 3rd European conference, Jyväskylä, Finland, July 26--30, 1999. Singapore: World Scientific. 587--592 (2000; Zbl 0972.65086)
Korotov, Sergey; Křížek, Michal; Neittaanmäki, Pekka On the existence of strongly regular families of triangulations for domains with a piecewise smooth boundary. (English) Zbl 1060.65665 Appl. Math., Praha 44, No. 1, 33-42 (1999). Reviewer: Pavel Burda (Praha) MSC: 65N30 65N50 PDFBibTeX XMLCite \textit{S. Korotov} et al., Appl. Math., Praha 44, No. 1, 33--42 (1999; Zbl 1060.65665) Full Text: DOI EuDML
Křížek, Michael; Liu, Liping; Neittaanmäki, Pekka Finite element analysis of a nonlinear elliptic problem with a pure radiation condition. (English) Zbl 0953.65081 Sequeira, Adélia (ed.) et al., Applied nonlinear analysis. In honor of the 70th birthday of Professor Jindřich Nečas. New York, NY: Kluwer Academic/Plenum Publishers. 271-280 (1999). MSC: 65N30 65N12 65N15 35J65 PDFBibTeX XMLCite \textit{M. Křížek} et al., in: Applied nonlinear analysis. In honor of the 70th birthday of Professor Jindřich Nečas. New York, NY: Kluwer Academic/Plenum Publishers. 271--280 (1999; Zbl 0953.65081)
Heikkola, Erkki; Kuznetsov, Yuri A.; Neittaanmäki, Pekka; Toivanen, Jari Fictitious domain methods for the numerical solution of two-dimensional scattering problems. (English) Zbl 0909.65119 J. Comput. Phys. 145, No. 1, 89-109 (1998). Reviewer: K.Najzar (Praha) MSC: 65Z05 78A45 76Q05 65N55 35Q60 35J05 35Q35 65N30 PDFBibTeX XMLCite \textit{E. Heikkola} et al., J. Comput. Phys. 145, No. 1, 89--109 (1998; Zbl 0909.65119) Full Text: DOI
Neittaanmaki, P.; Rudnicki, M.; Savini, A. Inverse problems and optimal design in electricity and magnetism. (English) Zbl 0865.65090 Monographs in Electrical and Electronic Engineering. 35. Oxford: Oxford Univ. Press. xiii, 367 p. (1996). Reviewer: Ll.G.Chambers (Bangor) MSC: 65Z05 78M10 35Q60 35R30 78A25 65N30 65K10 PDFBibTeX XMLCite \textit{P. Neittaanmaki} et al., Inverse problems and optimal design in electricity and magnetism. Oxford: Oxford Univ. Press (1996; Zbl 0865.65090)
Liu, Liping; Křížek, Michal; Neittaanmäki, Pekka Higher order finite element approximation of a quasilinear elliptic boundary value problem of a non-monotone type. (English) Zbl 0870.65096 Appl. Math., Praha 41, No. 6, 467-478 (1996). Reviewer: J.Chleboun (Praha) MSC: 65N30 74A15 35J65 PDFBibTeX XMLCite \textit{L. Liu} et al., Appl. Math., Praha 41, No. 6, 467--478 (1996; Zbl 0870.65096) Full Text: EuDML
Kuznetsov, Yu. A.; Neittaanmäki, P.; Tarvainen, P. Schwarz methods for obstacle problems with convection-diffusion operators. (English) Zbl 0817.65052 Keyes, David E. (ed.) et al., Domain decomposition methods in scientific and engineering computing. Proceedings of the 7th international conference on domain decomposition, October 27-30, 1993, Pennsylvania State University, PA, USA. Providence, RI: American Mathematical Society. Contemp. Math. 180, 251-256 (1994). MSC: 65K10 65N30 65N55 49M15 49M25 35J85 49J40 PDFBibTeX XMLCite \textit{Yu. A. Kuznetsov} et al., Contemp. Math. 180, 251--256 (1994; Zbl 0817.65052)
Kuznetsov, Yu. A.; Neittaanmäki, P.; Tarvainen, P. Overlapping domain decomposition methods for the obstacle problem. (English) Zbl 0795.65083 Quarteroni, Alfio (ed.) et al., Domain decomposition methods in science and engineering. The sixth international conference on domain decomposition, Como, Italy, June 15-19, 1992. Providence, RI: American Mathematical Society. Contemp. Math. 157, 271-277 (1994). Reviewer: W.Velte (Würzburg) MSC: 65Z05 65N30 65N55 65K10 35J85 49J40 PDFBibTeX XMLCite \textit{Yu. A. Kuznetsov} et al., Contemp. Math. 157, 271--277 (1994; Zbl 0795.65083)
Lu, T.; Neittaanmäki, P.; Tai, X.-C. A parallel splitting-up method for partial differential equations and its applications to Navier-Stokes equations. (English) Zbl 0756.65129 RAIRO, Modélisation Math. Anal. Numér. 26, No. 6, 673-708 (1992). Reviewer: E.Krause (Aachen) MSC: 65N30 65Y05 65N12 35J25 35J65 35Q30 65N50 PDFBibTeX XMLCite \textit{T. Lu} et al., RAIRO, Modélisation Math. Anal. Numér. 26, No. 6, 673--708 (1992; Zbl 0756.65129) Full Text: DOI EuDML
Haslinger, J.; Neittaanmäki, P.; Salmenjoki, K. On FE-grid relocation in solving unilateral boundary value problems by FEM. (English) Zbl 0757.65114 Appl. Math., Praha 37, No. 2, 105-122 (1992). Reviewer: M.Plum (Clausthal-Zellerfeld) MSC: 65N30 65N50 35J05 PDFBibTeX XMLCite \textit{J. Haslinger} et al., Appl. Math., Praha 37, No. 2, 105--122 (1992; Zbl 0757.65114) Full Text: EuDML
Křížek, Michal; Neittaanmäki, Pekka; Vondrák, Miroslav A nontraditional approach for solving the Neumann problem by the finite element method. (English) Zbl 0771.65070 Mat. Apl. Comput. 11, No. 1, 31-40 (1992). Reviewer: L.Boubelíková (Praha) MSC: 65N30 35J25 PDFBibTeX XMLCite \textit{M. Křížek} et al., Mat. Apl. Comput. 11, No. 1, 31--40 (1992; Zbl 0771.65070)
Tai, Xue-Cheng; Neittaanmäki, Pekka A linear approach for the nonlinear distributed parameter identification problem. (English) Zbl 0733.65098 Numerical methods for free boundary problems, Proc. Conf., Jyväskylä/Finl. 1990, ISNM 99, 401-411 (1991). Reviewer: O.Titow (Berlin) MSC: 65N30 65J15 93E10 93E12 PDFBibTeX XML
Tai, Xue-Cheng; Neittaanmäki, Pekka On the numerical solution of the distributed parameter identification problem. (English) Zbl 0742.35073 Estimation and control of distributed parameter systems, Proc. Int. Conf., Vorau/Austria 1990, ISNM 100, 317-330 (1991). MSC: 35R30 65M30 93E12 65N15 65N30 65M99 65N99 PDFBibTeX XMLCite \textit{X.-C. Tai} and \textit{P. Neittaanmäki}, in: Exponentially stable approximations of weakly damped wave equations. . 317--330 (1991; Zbl 0742.35073)
Křížek, M; Neittaanmäki, P. Finite element approximation of variational problems and applications. (English) Zbl 0708.65106 Pitman Monographs and Surveys in Pure and Applied Mathematics, 50. Harlow: Longman Scientific & Technical; New York: John Wiley & Sons, Inc. 239 p. £36.00 (1990). Reviewer: M.Brokate MSC: 65N30 65N12 65N22 65-02 65N25 35Jxx 35Q60 PDFBibTeX XMLCite \textit{M Křížek} and \textit{P. Neittaanmäki}, Finite element approximation of variational problems and applications. Harlow: Longman Scientific \&| Technical; New York: John Wiley \&| Sons, Inc. (1990; Zbl 0708.65106)
Neittaanmäki, Pekka; Stachurski, Andrzej Solving some optimal control problems using the barrier penalty function method. (English) Zbl 0716.49026 System modelling and optimization, Proc. 14th IFIP Conf., Leipzig/FRG 1989, Lect. Notes Control Inf. Sci. 143, 358-367 (1990). MSC: 49M30 90C20 49K40 65K10 65N30 49Q10 PDFBibTeX XML
Neittaanmäki, P. On the optimal shape design problems. (English) Zbl 0711.49061 Free boundary problems: theory and applications, Proc. Int. Colloq., Irsee/Ger. 1987, Vol. I, Pitman Res. Notes Math. Ser. 185, 166-182 (1990). Reviewer: P.Neittaanmäki MSC: 49Q10 35R35 49M15 65N30 PDFBibTeX XML
Neittaanmäki, Pekka Optimal shape design in contact problems. (English) Zbl 0701.49042 Discretization methods and structural optimization - procedures and applications, Proc. GAMM-Semin., Siegen/FRG 1988, Lect. Notes Eng. 42, 247-254 (1989). Reviewer: I.Bock MSC: 49Q10 74P99 49M37 65N30 PDFBibTeX XML
Křížek, Michal; Neittaanmäki, Pekka On time-harmonic Maxwell equations with nonhomogeneous conductivities: Solvability and FE-approximation. (English) Zbl 0696.65085 Apl. Mat. 34, No. 6, 480-499 (1989). Reviewer: I.Grosu MSC: 65Z05 65N15 65N30 78A25 35Q99 PDFBibTeX XMLCite \textit{M. Křížek} and \textit{P. Neittaanmäki}, Apl. Mat. 34, No. 6, 480--499 (1989; Zbl 0696.65085) Full Text: EuDML
Křížek, M.; Neittaanmäki, P. On \(O(h^ 4)\)-superconvergence of piecewise bilinear FE-approximations. (English) Zbl 0679.65081 Mat. Apl. Comput. 8, No. 1, 49-61 (1989). MSC: 65N30 35J05 PDFBibTeX XMLCite \textit{M. Křížek} and \textit{P. Neittaanmäki}, Mat. Apl. Comput. 8, No. 1, 49--61 (1989; Zbl 0679.65081)
Hara, Veikko; Neittaanmäki, Pekka; Marinov, Corneliu A. Numerical approach for signal delay in general distributed networks. (English) Zbl 0698.35017 Circuits and systems, Proc. Int. IEEE Symp., Espoo/Finl. 1988, 1353-1356 (1988). Reviewer: C.Marinov MSC: 35B40 35K50 65N30 PDFBibTeX XML
Haslinger, J.; Neittaanmäki, P.; Salmenjoki, K. On optimal mesh design for FEM in unilateral boundary value problems. (English) Zbl 0687.73075 The mathematics of finite elements and applications VI, MAFELAP 1987, Proc. 6th Conf., Uxbridge/UK 1987, 103-113 (1988). MSC: 74P99 74S05 65N30 65N50 PDFBibTeX XML
Neittaanmäki, Pekka; Křížek, Michal On \(O(h^ 4)\)-superconvergence of piecewise bilinear FE-approximations. (English) Zbl 0677.65106 Numerical analysis, Proc. 2nd Int. Symp., Prague/Czech. 1987, Teubner- Texte Math. 107, 250-255 (1988). Reviewer: I.N.Katz MSC: 65N30 35J05 PDFBibTeX XML
Haslinger, J.; Neittaanmäki, P.; Tiihonen, T.; Kaarna, A. Optimal shape design and unilateral boundary value problems. II. (English) Zbl 0642.49005 Optim. Control Appl. Methods 9, No. 2, 145-163 (1988). Reviewer: J.Haslinger MSC: 49J40 35J85 74A55 74M15 49K40 65N30 PDFBibTeX XMLCite \textit{J. Haslinger} et al., Optim. Control Appl. Methods 9, No. 2, 145--163 (1988; Zbl 0642.49005) Full Text: DOI
Haslinger, J.; Neittaanmäki, P.; Tiihonen, T.; Kaarna, A. Optimal shape design and unilateral boundary value problems. I. (English) Zbl 0642.49004 Optim. Control Appl. Methods 9, No. 2, 127-144 (1988). Reviewer: J.Haslinger MSC: 49J40 35J85 74A55 74M15 49K40 65N30 PDFBibTeX XMLCite \textit{J. Haslinger} et al., Optim. Control Appl. Methods 9, No. 2, 127--144 (1988; Zbl 0642.49004) Full Text: DOI
Laitinen, E.; Neittaanmäki, P On numerical simulation of the continuous casting process. (English) Zbl 0638.65089 J. Eng. Math. 22, No. 4, 335-354 (1988). Reviewer: E.Laitinen MSC: 65Z05 65N30 65N22 35K05 35R35 80A17 PDFBibTeX XMLCite \textit{E. Laitinen} and \textit{P Neittaanmäki}, J. Eng. Math. 22, No. 4, 335--354 (1988; Zbl 0638.65089) Full Text: DOI
Neittaanmäki, P.; Tiba, D. A steepest descent method for the approximation of the boundary control in two-phase Stefan problem. (English) Zbl 0663.65130 Math., Rev. Anal. Numér. Théor. Approximation, Math. 29(52), No. 2, 157-167 (1987). Reviewer: P.K.Mahanti MSC: 65Z05 65N30 35R35 35K20 80A17 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{D. Tiba}, Math. Rev. Anal. Numér. Théor. Approximation, Math. 29(52), No. 2, 157--167 (1987; Zbl 0663.65130)
Lasiecka, Irena; Sokołowski, Jan; Neittaanmaki, P. Finite element approximations of the wave equation with Dirichlet boundary data defined on a bounded domain in \(R^ 2\). (English) Zbl 0631.65112 Distributed parameter systems, Proc. 3rd Int. Conf., Vorau/Austria 1986, Lect. Notes Control Inf. Sci. 102, 216-233 (1987). MSC: 65N30 35L05 PDFBibTeX XML
Křížek, Michal; Neittaanmäki, Pekka On superconvergence techniques. (English) Zbl 0624.65107 Acta Appl. Math. 9, 175-198 (1987). MSC: 65N30 65-02 65L60 65M60 65R20 35J05 35L20 35K20 34B05 PDFBibTeX XMLCite \textit{M. Křížek} and \textit{P. Neittaanmäki}, Acta Appl. Math. 9, 175--198 (1987; Zbl 0624.65107) Full Text: DOI
Neittaanmäki, P.; Křížek, M. Postprocessing of a finite element scheme with linear elements. (English) Zbl 0623.65117 Numerical techniques in continuum mechanics, Proc. 2nd GAMM-Semin., Kiel/Ger. 1986, Notes Numer. Fluid Mech. 16, 69-83 (1987). MSC: 65N30 35J25 65B05 PDFBibTeX XML
Neittaanmäki, Pekka On the control of the secondary cooling in the continuous casting process. (English) Zbl 0605.49004 Optimal control of partial differential equations II: theory and applications, Conf. Oberwolfach/Ger. 1986, ISNM 78, 161-177 (1987). Reviewer: Chr.Saguez MSC: 49J20 49M15 80A20 65K10 65N30 90B30 93C20 93B40 PDFBibTeX XML
Křížek, M.; Neittaanmäki, P. On a global superconvergence of the gradient of linear triangular elements. (English) Zbl 0602.65084 J. Comput. Appl. Math. 18, 221-233 (1987). MSC: 65N30 65N15 35J25 PDFBibTeX XMLCite \textit{M. Křížek} and \textit{P. Neittaanmäki}, J. Comput. Appl. Math. 18, 221--233 (1987; Zbl 0602.65084) Full Text: DOI
Křížek, Michal; Neittaanmäki, Pekka Interval FE approximation of spaces of divergence-free functions in three-dimensional domains. (English) Zbl 0629.65127 Int. J. Numer. Methods Fluids 6, 811-817 (1986). Reviewer: P.Burda MSC: 65Z05 65N30 35Q30 76D05 PDFBibTeX XMLCite \textit{M. Křížek} and \textit{P. Neittaanmäki}, Int. J. Numer. Methods Fluids 6, 811--817 (1986; Zbl 0629.65127) Full Text: DOI
Haslinger, J.; Neittaanmäki, P. On optimal shape design of systems governed by mixed Dirichlet-Signorini boundary value problems. (English) Zbl 0603.49020 Math. Methods Appl. Sci. 8, 157-181 (1986). Reviewer: P.Quittner MSC: 49M15 35J85 49M30 49J40 65N30 65K10 74P99 93C20 PDFBibTeX XMLCite \textit{J. Haslinger} and \textit{P. Neittaanmäki}, Math. Methods Appl. Sci. 8, 157--181 (1986; Zbl 0603.49020) Full Text: DOI Link
Neittaanmäki, P.; Koikkalainen, P.; Marinov, C. A. On the computation of the delay time in some parabolic problems. (English) Zbl 0613.65128 Ber., Univ. Jyväskylä 31, 239-247 (1985). MSC: 65Z05 65N30 35K20 78A55 PDFBibTeX XMLCite \textit{P. Neittaanmäki} et al., Ber., Univ. Jyväskylä, Math. Inst. 31, 239--247 (1985; Zbl 0613.65128)
Křižek, Michal; Neittaanmäki, Pekka Finite element approximation for a div-rot system with mixed boundary conditions in non-smooth plane domains. (English) Zbl 0575.65125 Apl. Mat. 29, 272-285 (1984). MSC: 65Z05 65N30 35Q99 78A25 PDFBibTeX XMLCite \textit{M. Křižek} and \textit{P. Neittaanmäki}, Apl. Mat. 29, 272--285 (1984; Zbl 0575.65125) Full Text: EuDML
Křížek, Michal; Neittaanmäki, Pekka Superconvergence phenomenon in the finite element method arising from averaging gradients. (English) Zbl 0575.65104 Numer. Math. 45, 105-116 (1984). Reviewer: J.Weisel MSC: 65N30 35J25 PDFBibTeX XMLCite \textit{M. Křížek} and \textit{P. Neittaanmäki}, Numer. Math. 45, 105--116 (1984; Zbl 0575.65104) Full Text: DOI EuDML
Haslinger, J.; Neittaanmäki, P. On different finite element methods for approximating the gradient of the solution to the Helmholtz equation. (English) Zbl 0574.65123 Comput. Methods Appl. Mech. Eng. 42, 131-148 (1984). MSC: 65N30 65N15 35J05 PDFBibTeX XMLCite \textit{J. Haslinger} and \textit{P. Neittaanmäki}, Comput. Methods Appl. Mech. Eng. 42, 131--148 (1984; Zbl 0574.65123) Full Text: DOI
Haslinger, J.; Neittaanmäki, P. On the method of penalization in design optimization of systems governed by some unilateral boundary value problems. (English) Zbl 0557.49019 Optimal control of partial differential equations, Conf. Oberwolfach 1982, ISNM 68, 110-126 (1984). Reviewer: M.A.Noor MSC: 49M15 49J40 35J85 49M30 65N30 PDFBibTeX XML
Neittaanmäki, P.; Tiba, D. On the finite element approximation of the boundary control for two-phase Stefan problems. (English) Zbl 0553.49023 Analysis and optimization of systems, Proc. 6th int. Conf., Nice 1984, Part 1, Lect. Notes Control Inf. Sci. 62, 356-370 (1984). Reviewer: V.Arnăutu (Iaşi) MSC: 49M15 35R35 65N30 49K20 90C52 93C20 35K05 PDFBibTeX XML
Neittaanmäki, P.; Křižek, M. Conforming FE-method for obtaining the gradient of a solution to the Poisson equation. (English) Zbl 0549.65071 Efficient solutions of elliptic systems, Proc. GAMM-Semin., Kiel 1984, Notes Numer. Fluid Mech. 10, 74-86 (1984). MSC: 65N30 35J05 PDFBibTeX XML
Neittaanmäki, P. On the numerical solution of Helmholtz’s equation by different finite element methods. (English) Zbl 0531.65057 Z. Angew. Math. Mech. 63, No. 5, T364-T366 (1983). MSC: 65N30 65N15 35J05 PDFBibTeX XMLCite \textit{P. Neittaanmäki}, Z. Angew. Math. Mech. 63, T364--T366 (1983; Zbl 0531.65057)
Neittaanmaeki, Pekka; Picard, Rainer On the convergence of the finite element approximation of eigenfrequencies and eigenvectors to Maxwell’s boundary value problem. (English) Zbl 0489.65068 Ann. Acad. Sci. Fenn., Ser. A I, Math. 6, 255-271 (1981). MSC: 65Z05 35P15 35Q99 78A25 65N30 65N25 65N15 PDFBibTeX XMLCite \textit{P. Neittaanmaeki} and \textit{R. Picard}, Ann. Acad. Sci. Fenn., Ser. A I, Math. 6, 255--271 (1981; Zbl 0489.65068) Full Text: DOI
Neittaanmaeki, P.; Saranen, J. A mixed finite element method for the heat flow problem. (English) Zbl 0476.65071 BIT 21, 342-346 (1981). MSC: 65N30 65N15 35K20 80A20 PDFBibTeX XMLCite \textit{P. Neittaanmaeki} and \textit{J. Saranen}, BIT 21, 342--346 (1981; Zbl 0476.65071) Full Text: DOI
Neittaanmäki, P.; Saranen, J. Fehlerasymptotik für die Finite-Element Approximation einer akustischen Randwertaufgabe. (German) Zbl 0471.76084 Z. Angew. Math. Mech. 61, T298-T300 (1981). MSC: 76Q05 65N30 65N15 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{J. Saranen}, Z. Angew. Math. Mech. 61, T298--T300 (1981; Zbl 0471.76084)
Neittaanmäki, Pekka; Saranen, Jukka Semi-discrete Galerkin approximation method applied to initial boundary value problems for Maxwell’s equations in anisotropic, inhomogeneous media. (English) Zbl 0469.65080 Proc. R. Soc. Edinb., Sect. A 89, 125-133 (1981). MSC: 65Z05 65N30 65N15 78A25 35Q99 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{J. Saranen}, Proc. R. Soc. Edinb., Sect. A, Math. 89, 125--133 (1981; Zbl 0469.65080) Full Text: DOI
Neittaanmäki, P.; Saranen, J. On finite element approximation of the gradient for solution of Poisson equation. (English) Zbl 0463.65073 Numer. Math. 37, 333-337 (1981). MSC: 65N30 35J05 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{J. Saranen}, Numer. Math. 37, 333--337 (1981; Zbl 0463.65073) Full Text: DOI EuDML
Hamina, M.; Neittaanmäki, P.; Saranen, J. A least square FE-method for ideal fluid flow problems. (English) Zbl 0457.76022 Bericht. Universität Jyväskylä. Mathematisches Institut 24. Jyväskylä: Univ. Jyväskylä, Department of Mathematics. 47 p. (1981). MSC: 76B99 65N30 PDFBibTeX XMLCite \textit{M. Hamina} et al., A least square FE-method for ideal fluid flow problems. Jyväskylä: Univ. Jyväskylä, Department of Mathematics (1981; Zbl 0457.76022)
Neittaanmäki, P.; Saranen, J. Finite element approximation of vector fields given by curl and divergence. (English) Zbl 0456.65069 Math. Methods Appl. Sci. 3, 328-335 (1981). MSC: 65Z05 65N15 65N30 78A30 35F05 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{J. Saranen}, Math. Methods Appl. Sci. 3, 328--335 (1981; Zbl 0456.65069) Full Text: DOI
Neittaanmäki, P.; Saranen, J. On the finite element approximation for Maxwell’s problem in polygonal domains of the plane. (English) Zbl 0454.65080 Appl. Anal. 12, 73-83 (1981). MSC: 65Z05 65N15 35Q99 78A25 65N30 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{J. Saranen}, Appl. Anal. 12, 73--83 (1981; Zbl 0454.65080) Full Text: DOI
Neittaanmäki, Pekka; Picard, Rainer Error estimates for the finite element approximation to a Maxwell-type boundary value problem. (English) Zbl 0469.65079 Numer. Funct. Anal. Optimization 2, 267-285 (1980). MSC: 65Z05 65N15 65N30 35Q99 78A25 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{R. Picard}, Numer. Funct. Anal. Optim. 2, 267--285 (1980; Zbl 0469.65079) Full Text: DOI
Neittaanmäki, P.; Picard, R. On the finite element method for time-harmonic acoustic boundary value problems. (English) Zbl 0451.76071 Comput. Math. Appl. 7, 127-138 (1980). MSC: 76Q05 65N30 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{R. Picard}, Comput. Math. Appl. 7, 127--138 (1980; Zbl 0451.76071) Full Text: DOI
Neittaanmäki, P.; Saranen, J. Finite element approximation of electromagnetic fields in three dimensional space. (English) Zbl 0451.65087 Numer. Funct. Anal. Optimization 2, 487-506 (1980). MSC: 65Z05 65N30 78A30 35Q99 65N15 PDFBibTeX XMLCite \textit{P. Neittaanmäki} and \textit{J. Saranen}, Numer. Funct. Anal. Optim. 2, 487--506 (1980; Zbl 0451.65087) Full Text: DOI