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		<title>Concave Hexagons - Versionsgeschichte</title>
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		<title>Gbachelier: Die Seite wurde neu angelegt: „  == Reference == Paul Gailiunas: Concave Hexagons. In: Bridges 2009. Pages 243–250   == DOI ==  == Abstract == The tilings (n.3.n.3) exist in the sp…“</title>
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				<updated>2015-01-29T22:17:22Z</updated>
		
		<summary type="html">&lt;p&gt;Die Seite wurde neu angelegt: „  == Reference == Paul Gailiunas: &lt;a href=&quot;/index.php?title=Concave_Hexagons&quot; title=&quot;Concave Hexagons&quot;&gt;Concave Hexagons&lt;/a&gt;. In: &lt;a href=&quot;/index.php?title=Bridges_2009&quot; title=&quot;Bridges 2009&quot;&gt;Bridges 2009&lt;/a&gt;. Pages 243–250   == DOI ==  == Abstract == The tilings (n.3.n.3) exist in the sp…“&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Neue Seite&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&lt;br /&gt;
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== Reference ==&lt;br /&gt;
Paul Gailiunas: [[Concave Hexagons]]. In: [[Bridges 2009]]. Pages 243–250 &lt;br /&gt;
&lt;br /&gt;
== DOI ==&lt;br /&gt;
&lt;br /&gt;
== Abstract ==&lt;br /&gt;
The tilings (n.3.n.3) exist in the spherical, Euclidean or hyperbolic plane, depending on whether n is less than,&lt;br /&gt;
equal to, or greater than 6. In all cases the dual tiling consists of rhombi, which can be taken in pairs to form&lt;br /&gt;
&amp;quot;regular&amp;quot; concave hexagons. In the case of the spherical examples the tilings can be illustrated by colouring the&lt;br /&gt;
faces of rhombic polyhedra. In the Euclidean plane &amp;quot;regular&amp;quot; concave hexagons allow tilings that cannot be&lt;br /&gt;
constructed from the dual (6.3.6.3) tiling, some of which allow analogous tilings of non-&amp;quot;regular&amp;quot; concave&lt;br /&gt;
hexagons. Some Escher-like designs are derived from such tilings.&lt;br /&gt;
&lt;br /&gt;
Some of the possibilities in the hyperbolic plane are briefly considered.&lt;br /&gt;
&lt;br /&gt;
== Extended Abstract ==&lt;br /&gt;
&lt;br /&gt;
== Bibtex == &lt;br /&gt;
&lt;br /&gt;
== Used References ==&lt;br /&gt;
[1] P.Gailiunas, A Polyhedral Byway. Bridges Proceedings 2001, pp.115-122.&lt;br /&gt;
&lt;br /&gt;
[2] S.T.Coffin, The Puzzling World of Polyhedral Dissections, OUP, 1990, pp.126−7.&lt;br /&gt;
&lt;br /&gt;
[3] P.Gailiunas, Spiral Tilings. Bridges Proceedings 2000, pp.133-140, available online at http://www.mi.sanu.ac.yu/vismath/gal/index.html&lt;br /&gt;
&lt;br /&gt;
[4] D.Schattschneider, Visions of Symmetry, W.H.Freeman and Company, 1990.&lt;br /&gt;
&lt;br /&gt;
[5] P.Gailiunas, Some Monohedral Tilings Derived from Regular Polygons, Bridges Donostia Proceedings 2007, p.11.&lt;br /&gt;
&lt;br /&gt;
[6] http://www.bridgesmathart.org/art-exhibits/bridges2007/gailiunas.html&lt;br /&gt;
&lt;br /&gt;
[7] D.Dunham, 168 Butterflies on a Polyhedron of Genus 3, Bridges Proceedings 2002, pp.197-204.&lt;br /&gt;
&lt;br /&gt;
[8] Grünbaum and Shephard, Tilings and Patterns, W.H.Freeman and Company, 1987, p.289.&lt;br /&gt;
&lt;br /&gt;
[9] http://www.mi.sanu.ac.yu/vismath/gailiunas2008/index.html&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Links ==&lt;br /&gt;
=== Full Text === &lt;br /&gt;
http://archive.bridgesmathart.org/2009/bridges2009-243.pdf&lt;br /&gt;
&lt;br /&gt;
[[intern file]]&lt;br /&gt;
&lt;br /&gt;
=== Sonstige Links ===&lt;br /&gt;
http://archive.bridgesmathart.org/2009/bridges2009-243.html&lt;/div&gt;</summary>
		<author><name>Gbachelier</name></author>	</entry>

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