phi is omnipresent in math

"The golden number is omnipresent in math" Disclaimer: This isn't true, or as golden getal isn't include in any serious mathematical compendium. Everyone who studies math, physics or ingeneering, meets the whole Greek alphabet, however the golden number is totally absent. As well in GeoGebra , and are included and recognised in GeoGebra, but quite right nobody comes on the idea to include the number as an important constant.

niche subjects

The number just appears in some niche issues.
  • For obvious reasons appears in geometry when polygons and decagons appear. More about this you can find in phi and geometry.
  • The number also appears in applications in which the sequence of Fibonacci is involved. More about how and where you can read in phi and the sequence of Fibonacci.
Image