Alternative spelling of underapproximate

(physics) A law of physics used to describe the spectrum of thermal radiation.

plural of approximation algorithm

plural of over-approximation

plural of under-approximation

(mathematics) An accurate approximation for factorials.

Used to indicate that a statement, though not necessarily entirely accurate or without exceptions, is good enough for basic or preliminary purposes; more or less; basically.

(mathematics) The "best" approximation of a function by a rational function of given order. Under this technique, the approximant's power series agrees with the power series of the function it is approximating.

plural of Padé approximant

present participle of under-approximate