ArticleOriginal scientific text
Title
Continuous mappings with an infinite number of topologically critical points
Authors 1
Affiliations
- Faculty of Mathematics, "Babeş-Bolyai" University, Str. Kogălniceanu 1, 3400 Cluj-Napoca, Romania
Abstract
We prove that the topological φ-category of a pair (M,N) of topological manifolds is infinite if the algebraic φ-category of the pair of fundamental groups (π₁(M),π₁(N)) is infinite. Some immediate consequences of this fact are also pointed out.
Keywords
topologically critical points, covering mappings, G-manifolds
Bibliography
- D. Andrica and C. Pintea, Critical points of vector-valued functions, in: Proceedings of the 24th National Conference on Geometry and Topology, Timişoara 1993.
- D. Rozpłoch-Nowakowska, Equivariant maps of joins of finite G-sets and an application to critical point theory, Ann. Polon. Math. 56 (1992) 195-211.
- K. Kawakubo, The Theory of Transformation Groups, Oxford University Press, Oxford, 1991.
- W. S. Massey, Algebraic Topology: An Introduction, Harcourt, Brace & World, New York, 1967.
- R. S. Palais and C. L. Terng, Critical Point Theory and Submanifold Geometry, Lecture Notes in Math. 1353, Springer, 1988.
- F. Takens, The minimal number of critical points of a function on a compact manifold and the Lusternik-Schnirelmann category, Invent. Math. 6 (1968), 197-244.