ðiːz dɪtˈɜːmɪn ðə tˈaɪmɪnvˈɛɹiənt lˈɪnɪɹ kwɑːdɹˈæɾɪk ˈɛstᵻmˌeɪɾɚ ænd ðə tˈaɪmɪnvˈɛɹiənt lˈɪnɪɹ kwɑːdɹˈæɾɪk ɹˈɛɡjʊlˌeɪɾɚɹ ɪn dɪskɹˈiːttˈaɪm.
These determine the time-invariant linear–quadratic estimator and the time-invariant linear–quadratic regulator in discrete-time.