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'''[[Main Page|Home]] * [[Programming]] * [[Algorithms]] * Recursion'''
[[FILE:Bottrop_Halde_Beckstraße_Tetraeder.JPG|border|right|thumb|[https://en.wikipedia.org/wiki/Tetrahedron_in_Bottrop Tetrahedron in Bottrop] <ref>[https://en.wikipedia.org/wiki/Tetrahedron Tetrahedron] in [https://en.wikipedia.org/wiki/Bottrop Bottrop], [https://en.wikipedia.org/wiki/North_Rhine-Westphalia North Rhine-Westphalia], Germany, part of [[Arts#IndustrialHeritageTrail:Category:Industrial Heritage Trail|The Industrial Heritage Trail]], [https://commons.wikimedia.org/wiki/File:Bottrop_-_Halde_Beckstra%C3%9Fe_-_Tetraeder_03_ies.jpg Image] by [[Gerd Isenberg]], April 08, 2017. The design is reminiscent of the [https://en.wikipedia.org/wiki/Sierpinski_triangle#Analogues_in_higher_dimensions Sierpinski tetrix] : placing four half-size tetrahedra corner to corner and adding an octahedron in the middle, a full-size tetrahedron is formed; this process can be repeated recursively to form larger and larger tetrahedra, from [https://en.wikipedia.org/wiki/Tetrahedron_in_Bottrop Tetrahedron in Bottrop from Wikipedia], [https://commons.wikimedia.org/wiki/Category:Tetraeder_Bottrop Category:Tetraeder Bottrop] - [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons], [http://www.halden.ruhr/halden.html Halden im Ruhrgebiet] (German)</ref> ]]
'''Recursion''' is a technique to define a function, or process of repeating objects, in a [https://en.wikipedia.org/wiki/Self-similarity self-similar] way. In computer science it is a method or algorithm where the solution to a problem depends on solutions to smaller instances of the same problem.
* [https://en.wikipedia.org/wiki/Droste_effect Droste effect from Wikipedia]
: [[FILE:Droste cacao 100gr blikje, foto 02.JPG|none|border|text-bottom|300px]]
: [http://escherdroste.math.leidenuniv.nl/ Escher and the Droste effect] - [[Leiden University|Universiteit Leiden]] » [[Arts#:Category:M. C. Escher|M. C. Escher]]
* [https://en.wikipedia.org/wiki/Mise_en_abyme Mise en abyme from Wikipedia]
* [https://en.wikipedia.org/wiki/Ouroboros Ouroboros from Wikipedia]
: [[FILE:Serpiente alquimica.jpg|none|border|text-bottom|300px]]
* [https://en.wikipedia.org/wiki/The_Treachery_of_Images The Treachery of Images] by [[Arts#:Category:René Magritte|René Magritte]]
: [[FILE:MagrittePipe.jpg|none|border|text-bottom|link=https://en.wikipedia.org/wiki/The_Treachery_of_Images|300px]]
==Fractals==
* [https://en.wikipedia.org/wiki/Reentrant_%28subroutine%29 Reentrant (subroutine) from Wikipedia]
* [https://en.wikipedia.org/wiki/Turing_completeness Turing completeness from Wikipedia]
* [[Videos#ReturntoForever:Category:Return to Forever|Return to Forever]] - , [https://en.wikipedia.org/wiki/Hymn_of_the_Seventh_Galaxy Hymn of the Seventh GalaxySan_Sebastian_Jazz_Festival San Sebastian Jazz Festival], [https://en.wikipedia.org/wiki/Musikladen Musikladen Extra]July 25, 19742008, [https://en.wikipedia.org/wiki/YouTube YouTube] Video: [[Videos#ChickCorea:Category:Chick Corea|Chick Corea]], [https[:Category://en.wikipedia.org/wiki/Bill_Connors Bill Connors], [[Videos#StanleyClarkeStanley Clarke|Stanley Clarke]], [https://en.wikipedia.org/wiki/Lenny_White Lenny White]: {{#evu:https://www.youtube.com/watch?v=ppUpj90YAFU|alignment=left|valignment=top}}* [[Videos#ReturntoForever|Return to Forever]] - [https://en.wikipedia.org/wiki/Hymn_of_the_Seventh_Galaxy Hymn of the Seventh Galaxy], [https://en.wikipedia.org/wiki/Montreux_Jazz_Festival Montreux Jazz Festival], 2008, [https://en.wikipedia.org/wiki/YouTube YouTube] VideoCategory: [[Videos#ChickCorea|Chick Corea]], [[Videos#AlDiMeolaAl Di Meola|Al Di Meola]], [[Videos#StanleyClarke:Category:Lenny White|Stanley Clarke]], [https://en.wikipedia.org/wiki/Lenny_White Lenny White]]: {{#evu:https://www.youtube.com/watch?v=d0LJ2GlziJkNGJ2AaIVGl8|alignment=left|valignment=top}}
=References=
<references />
'''[[Algorithms|Up one Level]]'''
[[Category:Artist|Industrial Heritage Trail]][[Category:M. C. Escher]][[Category:René Magritte]][[Category:Return to Forever]][[Category:Stanley Clarke]][[Category:Chick Corea]][[Category:Lenny White]][[Category:Al Di Meola]][[Category:Animation]]
