Although concrete operators with singular continuous spectrum have proliferated recently [7,11,13,17,34,35,37,39], we still don’t really understand much about singular continuous spectrum. In part, this is because it is normally defined by what it isn’t — neither pure point nor absolutely continuous. An important point of view, going back in part to Rodgers and Taylor [27,28], and studied recen...

This study presents an evaluation of semi-empirical single-point wall pressure spectrum models by comparing model predictions with wind tunnel and flight test data. The mean squared error was used to compare the power spectral density fluctuations predicted a large amount experimental Results show that proposed Goody Smol’yakov have lowest when predicting for experiments Rackl Weston has In add...

Abstract We consider metrizable ergodic topological dynamical systems over locally compact, $\sigma $ -compact abelian groups. study pure point spectrum via suitable notions of almost periodicity for the points system. More specifically, we characterize mean generic points. then go on and show how Besicovitch periodic determine both eigenfunctions measure in this case. After this, those arising...