φ: R-nat → R between corresponding lattices is defined and some properties of φ are shown, in particular, the compatibility of φ with operations of unions in lattices.

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- Lie algebras of operators and invariant GL(2, ℜ)-integrals for Darboux type differential systems.
- Measure of stability for a finite cooperative game with a generalized concept of equilibrium.
- Collocation and Quadrature Methods for Solving Singular Integral Equations with Piecewise Continuous Coefficients.
- Criterion of parametrical completeness in the 6-element non-chain extension of Intuitionistic logic of A. Heyting.
- Linear stability bounds in a convection problem for variable gravity field.
- A new method for computing the number of n-quasigroups.
- The GL(2, ℜ)-orbits of polynomial differential systems of degree four.
- A Linear Parametrical Programming Approach for Studying and Solving Bilinear Programming Problem.
- On topological torsion LCA groups with commutative ring of continuous endomorphisms.
**Natural classes and torsion free classes in categories of modules.**- Finite difference schemes for problems of mixture of two component elastic materials.
- Characteristic functions of Markovian random evolutions in ℜ
^{m}. - Nearly simple elementary divisor domains.
- Factorization theorems for some spaces of analytic functions.