- autoregressive spectral estimator
- autoregressive transfer function
- autoregressive transformation
- autospectral density
- autostability
- autostable model
- autotopism
- autovariance
- auxiliary
- auxiliary calculation
- auxiliary circle
- auxiliary cone
- auxiliary construction
- auxiliary derivation
- auxiliary diagonal
- auxiliary element
- auxiliary equation
- auxiliary function
- auxiliary latitude
- auxiliary line
- auxiliary mean
- auxiliary network
- auxiliary predicate
- auxiliary spectrum
- auxiliary statistic