Adjective
English Wikipedia has an article on:Well-posed problemWikipedia
well-posed (not comparable)
(mathematics) Having a unique solution whose value changes only slightly if initial conditions change slightly
For instance, computing the square root of 2 (which is roughly 1.41421) is a well-posed problem. Source: Internet
An art of numerical analysis is to find a stable algorithm for solving a well-posed mathematical problem. Source: Internet
Numerical stability and well-posed problems Numerical stability is an important notion in numerical analysis. Source: Internet