O cyklech cyklických grafů
O jednom typu dobře orientovaných grafů
O rovnovážne orientovaných konečných grafoch
O -basích orientovaných grafů
Ob'edinenie i proizvedenie w - prostranstv
Obstruction et transgression cohomologique dans les espaces fibrés.
Obstruction Theory in Fiber Spaces.
Obstructions for Clifford Structures on Vector Bundles.
Obstructions to Embedding and Isotopy in the Metastable Range.
Obstructions to the section problem in a fibration with a weak formal base.
Obstructions to the section problem in fibre bundles.
Octahedra and braids
Oka manifolds: From Oka to Stein and back
Oka theory has its roots in the classical Oka-Grauert principle whose main result is Grauert’s classification of principal holomorphic fiber bundles over Stein spaces. Modern Oka theory concerns holomorphic maps from Stein manifolds and Stein spaces to Oka manifolds. It has emerged as a subfield of complex geometry in its own right since the appearance of a seminal paper of M. Gromov in 1989.In this expository paper we discuss Oka manifolds and Oka maps. We describe equivalent characterizations...
On 2-distributions in 8-dimensional vector bundles over 8-complexes
It is shown that the -index of a 2-distribution in an 8-dimensional spin vector bundle over an 8-complex is independent of the 2-distribution. Necessary and sufficient conditions for the existence of 2-distributions in such vector bundles are given in terms of characteristic classes and a certain secondary cohomology operation. In some cases this operation is computed.
On 3-Manifolds with Finite Solvable Fundamental Groups.
On 4-fields and 4-distributions in 8-dimensional vector bundles over 8-complexes
Let ξ be an oriented 8-dimensional spin vector bundle over an 8-complex. In this paper we give necessary and sufficient conditions for ξ to have 4 linearly independent sections or to be a sum of two 4-dimensional spin vector bundles, in terms of characteristic classes and higher order cohomology operations. On closed connected spin smooth 8-manifolds these operations can be computed.
On a certain formula for exotic characteristic classes I.
On a class of multi-valued vector fields in Banach spaces
On a class of spaces for which the fixed-point property is characterized by homology groups
On a coincidence of mappings of compact spaces in topological groups