Ciencias,UNAM

Browsing by Author "Illanes, A"

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Browsing by Author "Illanes, A"

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  • Openness of induced mappings
    Charatonik, JJ; Charatonik, WJ; Illanes, A (1999)
    Openness of induced mappings between hyperspaces of continua is studied. In particular we investigate continua X such that if for a mapping f:X --> Y the induced mapping C(f):C(X) --> C(Y) is open, then f is a homeomorphism. ...
  • Openness of induced projections
    Charatonik, JJ; Charatonik, WJ; Illanes, A (2000)
    For continua X and Y it is shown that if the projection f : X x Y --> X has its induced mapping C(f) open, then X is C-smooth. As a corollary, a characterization of dendrites in these terms is obtained.
  • Property of Kelley for confluent retractable continua
    Charatonik, JJ; Charatonik, WJ; Illanes, A (2001)
    The property of Kelley for confluent retractable continua is studied. It is shown that a confluent retractable continuum has the property of Kelley if and only if each of its proper subcontinua has the property. An example ...