Equivariant maps of -actions into polyhedra
Equivariant shape
Errata to the paper "On shape" Fundamenta Mathematicae 74 (1972), pp. 47-71
Errata to the paper "On some problem of Borsuk" Fundamenta Mathematicae 73 (1972), pp. 271-274
Errata to the paper: ``Regularization of closed-valued multifunctions in a non-metric setting''
Erratum: ``A note on mappings of Baire spaces' (Math. Slovaca 27 (1977), no. 2, 173--176)
Erratum to: "C(X) vs. C(X) modulo its socle" (Colloq. Math. 111 (2008), 315-336)
Erweiterung einer stetigen Abbildung
Erweiterungen topologischer Räume.
Espaces de Baire et espaces de Namioka.
Espaces et espaces des applications continues
Espaces uniformes et espaces de mesures
Espaces -complètement réguliers
Essential mappings and transfinite dimension
Estimations de Strichartz pour des perturbations à longue portée de l’opérateur de Schrodinger
On présente dans cet exposé une approche semi-classique déduite des résultats de N. Burq, P. Gérard et N. Tzvetkov [4] permettant de démontrer des inégalités de Strichartz pour un problème non captif. On retrouve ainsi des résultats de G. Staffilani et D. Tataru [16] (obtenus pour une perturbation de la métrique à support compact). On donne aussi des généralisations de ces résultats au cas d’une perturbation à longue portée
Euler characteristics of 2-manifolds and light open maps
Exactly two-to-one maps from continua onto arc-continua
Continuing studies on 2-to-1 maps onto indecomposable continua having only arcs as proper non-degenerate subcontinua - called here arc-continua - we drop the hypothesis of tree-likeness, and we get some conditions on the arc-continuum image that force any 2-to-1 map to be a local homeomorphism. We show that any 2-to-1 map from a continuum onto a local Cantor bundle Y is either a local homeomorphism or a retraction if Y is orientable, and that it is a local homeomorphism if Y is not orientable.
Exactly two-to-one maps from continua onto some tree-like continua
It is known that no dendrite (Gottschalk 1947) and no hereditarily indecomposable tree-like continuum (J. Heath 1991) can be the image of a continuum under an exactly 2-to-1 (continuous) map. This paper enlarges the class of tree-like continua satisfying this property, namely to include those tree-like continua whose nondegenerate proper subcontinua are arcs. This includes all Knaster continua and Ingram continua. The conjecture that all tree-like continua have this property, stated by S. Nadler...
Examples relating to mesocompact and sequentially mesocompact spaces
Exchange PF-rings and almost PP-rings.