What is the correct and most commonly used noun to describe the degree of how much a system of equations is underdetermined? In my context the ratio $\frac{\text{number of equations}}{\text{number of variables}}$ is very important.
I already asked the question on stackexchange's English Language & Usage, but it didn't lead to a clear result.
The remaining filtered candidates so far are:
- (under)determinancy
- (under)determinacy
- (under)determinedness
Other suggestions welcome!