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golden ratio

Synonym: 
golden number
Type of Math Object: 
Definition
Major Section: 
Reference

Mathematics Subject Classification

40A05 no label found11B39 no label found

Comments

ugh.. what illustrative.. hehehe a rectangle
sorry for sarcasm
I was thinking on something like

---------------
| | |
| | |
| | |
| | |
--------------

showing that cutting a square leaves a rectangle similar to the original
f
G -----> H G
p \ /_ ----- ~ f(G)
\ / f ker f
G/ker f

sorry that was meant to be a correction, not a post
f
G -----> H G
p \ /_ ----- ~ f(G)
\ / f ker f
G/ker f

I could do another pic below it showing that you get the "golden spiral" that way.

apk

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