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Search: MSC category 54F15 ( Continua and generalizations )

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1. CJM 2015 (vol 68 pp. 675)

Martínez-de-la-Vega, Veronica; Mouron, Christopher
 Monotone Classes of Dendrites Continua $X$ and $Y$ are monotone equivalent if there exist monotone onto maps $f:X\longrightarrow Y$ and $g:Y\longrightarrow X$. A continuum $X$ is isolated with respect to monotone maps if every continuum that is monotone equivalent to $X$ must also be homeomorphic to $X$. In this paper we show that a dendrite $X$ is isolated with respect to monotone maps if and only if the set of ramification points of $X$ is finite. In this way we fully characterize the classes of dendrites that are monotone isolated. Keywords:dendrite, monotone, bqo, antichainCategories:54F50, 54C10, 06A07, 54F15, 54F65, 03E15

2. CJM 2009 (vol 62 pp. 182)

Prajs, Janusz R.
 Mutually Aposyndetic Decomposition of Homogeneous Continua A new decomposition, the \emph{mutually aposyndetic decomposition} of homogeneous continua into closed, homogeneous sets is introduced. This decomposition is respected by homeomorphisms and topologically unique. Its quotient is a mutually aposyndetic homogeneous continuum, and in all known examples, as well as in some general cases, the members of the decomposition are semi-indecomposable continua. As applications, we show that hereditarily decomposable homogeneous continua and path connected homogeneous continua are mutually aposyndetic. A class of new examples of homogeneous continua is defined. The mutually aposyndetic decomposition of each of these continua is non-trivial and different from Jones' aposyndetic decomposition. Keywords:ample, aposyndetic, continuum, decomposition, filament, homogeneousCategories:54F15, 54B15
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