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Weakened acute type condition for tetrahedral triangulations and the discrete maximum principle
Author(s):
Sergey
Korotov;
Michal
Krízek;
Pekka
Neittaanmäki.
Journal:
Math. Comp.
70
(2001),
107-119.
MSC (2000):
Primary 65N30
Posted:
May 23, 2000
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Abstract:
We prove that a discrete maximum principle holds for continuous piecewise linear finite element approximations for the Poisson equation with the Dirichlet boundary condition also under a condition of the existence of some obtuse internal angles between faces of terahedra of triangulations of a given space domain. This result represents a weakened form of the acute type condition for the three-dimensional case.
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Additional Information:
Sergey
Korotov
Affiliation:
University of Jyväskylä, Department of Mathematical Information Technology, P.O. Box 35, FIN--40351 Jyväskylä, Finland
Email:
korotov@mit.jyu.fi
Michal
Krízek
Affiliation:
Mathematical Institute, Academy of Sciences, Zitná 25, CZ--11567 Prague 1, Czech Republic
Email:
krizek@math.cas.cz
Pekka
Neittaanmäki
Affiliation:
University of Jyväskylä, Department of Mathematical Information Technology, P.O. Box 35, FIN--40351 Jyväskylä, Finland
Email:
pn@mit.jyu.fi
DOI:
10.1090/S0025-5718-00-01270-9
PII:
S 0025-5718(00)01270-9
Keywords:
Maximum principle,
Poisson equation,
weakened acute type condition,
linear tetrahedral finite element
Received by editor(s):
January 26, 1999
Posted:
May 23, 2000
Additional Notes:
The first author was partly supported by the Academy of Finland, Grant no. 752205, and partly by the Mittag-Leffler Institute, Djursholm, Sweden
The second author was supported by the Grant no. 201/98/0528 of the Grant Agency of Czech Republic
Copyright of article:
Copyright
2000,
American Mathematical Society
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