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Let a class
of spaces be given. A member of
is
said to be *universal for*
if every member of
can be embedded in , i.e., if for every
there
exists a homeomorphism
. Accordingly, a dendrite is
said to be *universal* if it contains a homeomorphic image of any
other dendrite.

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*Janusz J. Charatonik, Pawel Krupski and Pavel Pyrih*

*2001-11-30*