Pythagorean Extension
of the form 
, where 
.
See also
Extension Field, Pythagorean FieldExplore with Wolfram|Alpha
References
Itô, K. (Ed.). §155B in Encyclopedic Dictionary of Mathematics, 2nd ed., Vol. 2. Cambridge, MA: MIT Press, p. 611, 1986.Referenced on Wolfram|Alpha
Pythagorean ExtensionCite this as:
Weisstein, Eric W. "Pythagorean Extension." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PythagoreanExtension.html