Main scientific results

1979
Construction of an octahedron with non-Lipschitzian boundary [J4].
1982
Existence of a strongly regular family of decompositions of an arbitrary polyhedron into tetrahedra [C1].
1983
Construction of divergence-free finite element basis functions with small supports [B1] (for continuous piecewise linear divergence-free basis functions see [B9]).
1984
Superconvergence phenomenon in the finite element method arising from averaging gradients [B3].
1985
Dual finite element method for the biharmonic problem [C5].
1986
Construction of divergence-free finite element functions in three-dimensional domains [B4].
1987
A general definition of superconvergence [B6].
1988 
O(h4)-superconvergence of piecewise bilinear finite element approximations [B7], [B8].
1989
Finite element solution of time-harmonic Maxwell equations [C11].
1990
Preconditioned biconjugate gradient method for a system of linear algebraic equations in a complex variable [G5], [B20].
1991
The maximum angle condition that guarantees optimal interpolation properties of linear triangular finite elements [C12].
1992
The maximum angle condition that guarantees optimal interpolation properties of linear tetrahedral finite elements [B11].
1993
Numerical analysis of finite element variational crimes for a nonlinear elliptic problem [B14].
1994
Finite element analysis of a quasilinear nonpotential elliptic problem of a nonmonotone type [B19].
1995
Discrete maximum principle on tetrahedral meshes [B21], [B34], [B35].
1996
A comparison principle for a quasilinear elliptic problem [B25].
1997
Local refinements of unstructured tetrahedral meshes [B26].
1998
Finite element analysis of a radiation heat transfer problem [B29].
1999
Finite speed of gravitational interaction contributes to the expansion of the universe [B32].
2000
Numerical analysis of variational crimes for a quasilinear elliptic problem in 3D [B33].
2001
A necessary and sufficient condition for the primality of Fermat numbers [C23].
2002
Colouring polytopic partitions [C25], in particular, any tetrahedralization is   f o u r - c o l o u r a b l e .
2003
The nonexistence of a Lobachevsky geometry model of an isotropic and homogeneous universe [B41] (for the time-lens principle see [K25]).
2004
A new relationship between Mersenne and Sophie Germain primes [B46].
2005 
For a given integer m there is no face-to-face tetrahedralization of R3 such that each edge is surrounded by m tetrahedra [B50].
2006 
There is no face-to-face partition of R5 into acute simplices [B54].
2007 
Dissection of the path-simplex in Rn into n path-simplices [B56].
2008
Euclidean primes have the minimum number of primitive roots [B60].
2009
Gravitational aberration contributes to the dark energy necessary for the accelerated expansion of the Universe [B61].
2010
Manifestations of dark energy in the dynamics of the Solar system [D32].
2011
Two-sided bounds of the FE discretization error [B75].
2012
The origin of dark energy [B78].
Last update on March 8, 2012