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          This image was selected as  picture of the month on the Mathematics Portal for December 2011 | 
         
        
        
        
        
       
        Summary 
        
         
          
           | Description | 
           
            English: A  bifurcation diagram for the  Logistic map:
                
               The horizontal axis is the  r parameter, the vertical axis is the  x variable. The image was created by forming a 1601 x 1001 array representing increments of 0.001 in  r and  x. A starting value of  x=0.25 was used, and the map was iterated 1000 times in order to stabilize the values of  x. 100,000  x -values were then calculated for each value of  r and for each  x value, the corresponding  (x,r) pixel in the image was incremented by one. All values in a column (corresponding to a particular value of  r) were then multiplied by the number of non-zero pixels in that column, in order to even out the intensities. Values above 250,000 were set to 250,000, and then the entire image was normalized to 0-255. Finally, pixels for values of  r below 3.57 were darkened to increase visibility.  
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           | Date | 
           14 September 2005 | 
          
          
           | Source | 
           Own work | 
          
          
           | Author | 
            PAR | 
          
         
         
        Licensing 
        
         
          | Public domainPublic domainfalsefalse | 
         
        
        
         
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          I, the copyright holder of this work, release this work into the  public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.Public domainPublic domainfalsefalse 
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       File usage
       
        The following pages on Schools Wikipedia link to this image (list may be incomplete):
        
        
       
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