On the Uniqueness of Some Affinely Flat Infra-nilmanifolds.
On the Varieties Parametrizing Rational Space Curves with Fixed Normal Bundle.
On the Volume-Preserving Foliations.
On the Weak Covering Homotopy Property.
On the winding number and equivariant homotopy classes of maps of manifolds with some finite group actions
On Thom Polynomials for A4(−) via Schur Functions
2000 Mathematics Subject Classification: 05E05, 14N10, 57R45.We study the structure of the Thom polynomials for A4(−) singularities. We analyze the Schur function expansions of these polynomials. We show that partitions indexing the Schur function expansions of Thom polynomials for A4(−) singularities have at most four parts. We simplify the system of equations that determines these polynomials and give a recursive description of Thom polynomials for A4(−) singularities. We also give Thom polynomials...
On Thom-Whitney Stratification Theory.
On topological degree and Poincaré duality
In this Note we investigate about some relations between Poincaré dual and other topological objects, such as intersection index, topological degree, and Maslov index of Lagrangian submanifolds. A simple proof of the Poincaré-Hopf theorem is recalled. The Lagrangian submanifolds are the geometrical, multi-valued, solutions of physical problems of evolution governed by Hamilton-Jacobi equations: the computation of the algebraic number of the branches is showed to be performed by using Poincaré dual....
On topological factors of 3 dimensional locally connected continuum embeddable in
On topological invariants of vector bundles
Let E → W be an oriented vector bundle, and let X(E) denote the Euler number of E. The paper shows how to calculate X(E) in terms of equations which describe E and W.
On topological neighbourhoods
On topological rigidity of projective foliations
On Topological Span
On transverse foliations
On transverse structures of foliations
On two natural Riemannian metrics on a tube.
On two results of Singhof
For a compact connected semisimple Lie group we shall prove two results (both related with Singhof’s paper [13]) on the Lusternik-Schnirelmann category of the adjoint orbits of , respectively the 1-dimensional relative category of a maximal torus in . The techniques will be classical, but we shall also apply some basic results concerning the so-called -category (cf. [14]).
On two-parametric systems of matrices and diffeomorphisms
On 'Type' Conditions for Generic Real Submanifolds of Cn.
On universal groups and three-manifolds.