affine arithmetic (uncountable)
(mathematical analysis, computing)
Affine arithmetic (AA) is a model for self-validated numerical analysis.
In AA, the quantities of interest are represented as affine combinations (affine forms)
of certain primitive variables, which stand for sources of uncertainty in the data
or approximations made during the computation. ==Affine arithmetic operations==
===Chaining operations===...
Found on
http://en.wikipedia.org/wiki/Affine_arithmetic