On smooth maps with finitely many critical points

D Andrica, L Funar - Journal of the London Mathematical Society, 2004 - cambridge.org
ON SMOOTH MAPS WITH FINITELY MANY CRITICAL POINTS Page 1 J. London Math. Soc.
(2) 69 (2004) 783–800 Cо2004 London Mathematical Society DOI: 10.1112/S0024610704005320 …

Aspects of Global Analysis of Circle-Valued Mappings

D Andrica, D Mangra, C Pintea - Topics in Mathematical Analysis and …, 2014 - Springer
We deal with the minimum number of critical points of circular functions with respect to two
different classes of functions. The first one is the whole class of smooth circular functions …

[HTML][HTML] A measure of the deviation from there being fibrations between a pair of compact manifolds

C Pintea - Differential Geometry and its Applications, 2006 - Elsevier
In this paper we first study the topology of certain manifold complements. The obtained
results are then used to show that the φ-category (cf. Lusternik–Schnirelmann category) of …

Closed sets which are not 𝐶𝑆^{∞}-critical

C Pintea - Proceedings of the American Mathematical Society, 2005 - ams.org
In this paper we first observe that the complement of a countable closed subset of an $ n $-
dimensional manifold $ M $ has large $(n-1) $-homology group. In the last section we use …

Isomorphic homotopy groups of certain regular sets and their images

G Cicortaş, C Pintea, L Ţopan - Topology and its Applications, 2010 - Elsevier
In this paper we study the relation between the topology of the set R (f) of regular points and
the topology of its image f (R (f)), for some special maps f: M→ N acting between two …

The plane CS∞ non-criticality of certain closed sets

C Pintea - Topology and its Applications, 2007 - Elsevier
The plane CS non-criticality of certain closed sets Page 1 Topology and its Applications 154
(2007) 367–373 www.elsevier.com/locate/topol The plane CS ∞ non-criticality of certain …

The size of some vanishing and critical sets.

C Pintea - Studia Universitatis Babes-Bolyai, Mathematica, 2020 - search.ebscohost.com
We prove that the vanishing sets of all top forms on a non-orientable manifold are at least 1-
dimensional in the general case and at most 1-codimensional in the compact case. We …

[PDF][PDF] The minimum number of zeros of Lipschitz-Killing curvature

D Andrica, C Pintea - Balkan Journal of Geometry and Its …, 2002 - webdoc.sub.gwdg.de
In the previous paper [11] some sufficient topological conditions, expressed in terms of
homotopy groups, of two given differentiable manifolds M, N in order that the ϕ-category of …

DIFFERENTIABLE MAPS WITH UNCOUNTABLE CRITICAL SETS.

IR PETER, C PINTEA - Mathematica (1222-9016), 2016 - search.ebscohost.com
In this paper we provide some sufficient conditions on two manifolds which ensure
uncountable critical sets for all smooth maps between the two manifolds. These sufficient …

Necessary conditions for finite critical sets. Maps with infinite critical sets

IR Peter, C Pintea - 2016 - projecteuclid.org
We provide necessary conditions on a given map, between two compact differential
manifolds, for its critical set to be finite. As consequences of these conditions we also …