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CONNECTEDNESS
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Examples in Continuum Theory
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Examples in Continuum Theory
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Contents
CONNECTEDNESS
Connectedness, arcwise connectedness, continuumwise connectedness (continuum chainability)
A cut point (the complement is not connected); a separating point (the complement is not continuumwise connected)
Components, quasi-components, composants. Arc-components.
LOCAL CONNECTEDNESS
Local connectedness and related concepts (connectedness im kleinen, aposyndesis, semi-local connectedness); relations between them.
DIMENSION
The concept of a curve. Mapping of [0,1] onto [0,1]
2
.
Menger-Urysohn dimension of a space at a point.
Universal spaces (in general).
Hilbert's cube
Sierpiski Universal Plane Curve
Menger's universal curve. Its Anderson's characterization.
Universal Menger's compacta. Their Bestvina's characterization.
Nöbeling's examples. (?).
Embeddability of a curve in a surface. Planability. Two Kuratowski's graphs and two Claytor's curves. Embeddability of a locally connected continuum in the plane.
ORDER OF A POINT
Menger-Urysohn's order of a point.
Curves of a finite order.
Urysohn's examples: for each positive integer there is a continuum X(n) consisting solely of points of order n and 2n - 2.
Sierpiski Tringle
Urysohn's examples: for there is a continuum consisting solely of points of order
DENDRITES
Dendrites and their basic properties.
Universal dendrites of order . Various constructions.
Waewski's universal dendrite.
Local dendrites.
INDECOMPOSABILITY
Early examples.
Common boundary of three or more domains. Examples by R. L. Wilder and M. Lubaski.
Indecomposable continua via inverse limits.
IRREDUCIBLE CONTINUA; DECOMPOSITIONS
???
SPECIAL CONTINUA
Hereditarily decomposable curves without arcs (Z. Janiszewski).
Whyburn's hereditary cut of the plane.
Hereditarily indecomposable continua.
The pseudoarc
The pseudocircle
n-dimensional hereditarily indecomposable continua (R.H.Bing)
The circle of pseudoarcs.
-like continua.
UNIVERSAL SPACES
Universal arc-like continuum(Schori).
Universal circle-like continuum(Rogers).
Some universal curves (Krasinkiewicz and Minc).
Mohler-Nikiel universal smooth dendroid.
MAPPINGS
Mapping properties -- families of continua.
Various kinds of mappings.
Fixed point theory.
HOMOGENEOUS SPACES
Homogeneity.
Homogeneous continua. Solenoids.
Homogeneity of Menger compacta (Anderson, W. Lewis).
Variants of homogeneity; Knaster problem; K. Kuperberg's results.
Generalized homogeneity.
HYPERSPACES
Hyperspaces are terrible ;-)
Lost continua
Arc-like continua
Topologist's Sin Curve
Open Sin
Double Topologists's Sin Curve
Snake
Cantor Meanders
Cantor Snake
Cruller
Double Buckethandle
Self-homeomorphic continua
Root
Dendrites
Waewski's Universal Dendrite
Universal Dendrite D
3
Universal Dendrite D
4
Universal Dendrite D
6
Gehman Dendrite
Dendroids
Cantor Comb
Gehman Dendrite with Ski
Makuchowski Twin
Fans
Harmonic Fan
Harmonic Shredded Fan
Cantor Fan
Lelek Fan
Planable continua
Makuchowski Umbrella
New examples
New examples
Whyburn's Curve
Pseudo-arc
Dyadic Selenoid
Zig-zag Circle
M-Continuum
Buckethandle
Cantor Interaction
Pseudo-circle
Semicircle Continuum
Boxes Continuum
New examples 2
Graph K
3,3
Graph K
5
Space Filling Curve
Universal Arc-like Continuum
Lakes of Wada
Borsuk Fan
Ingram's Atriodic Continuum
Double Warsaw Circle
Warsaw Circle
Crooked Warsaw Circle
New examples 3
Young Spiral
Young Space
Bing Space
Universal Smooth Dendroid
Claytor's Curve A
Claytor's Curve B
Sin Addiction Continuum
Dumbbell
Figure Eight
Noose
New examples 4
Theta Curve
Trapezoid Basins Continuum
Dragon Continuum
Definitions
List of examples
Index
Bibliography
Janusz J. Charatonik, Pawel Krupski and Pavel Pyrih
2001-02-21