- theory of screws
- theory of search
- best asymptotically normal estimate
- best-bound rule
- best complete approximation
- best constant
- best critical region
- best equivariant estimator
- best estimate
- best estimator
- best extension
- best fit
- best fit approximation
- best harmonic majorant
- best-improvement rule
- best invariant estimate
- best invariant estimator
- best linear invariant estimate
- best linear method
- best linear unbiased estimate
- best linear unbiased estimator
- best osculation
- best partial approximation
- best polynomial approximation
- best predictor