#numerical analysis

• Approximation — An etymological or bookish spelling variant for the noun 'aproximare'; the act of determining or expressing an estimated value, quantity, or result situated very close to mathematical truth or physical reality, without ensuring absolute exactness. It represents a fundamental structural methodological procedure in numerical analysis, used to bring complex equations into accessible computational forms by controlled management of a margin of error or a preset tolerance.
• Approximation — The act of approximating and its result; a scientific, mathematical, or empirical method through which an exact but unknown or hard-to-calculate value is structurally replaced with a close, technically or statistically acceptable value.