Comprehensive introduction to analysis of continuous and discrete-time signals and systems. Linear time-invariant systems, convolution; Fourier series representations of periodic signals; Continuous ...

Time crystals can be classified as either discrete or continuous. An external periodic force drives discrete time crystals, while continuous time crystals emerge from the collective and self-sustained ...

Design linear discrete-time systems and filters and analyze their behavior. Represent continuous-time signals and linear systems in discrete time, so that such signals can be recovered in continuous ...

Scientists believe that time is continuous, not discrete -- roughly speaking, they believe that it does not progress in "chunks," but rather "flows," smoothly and continuously. So they often model ...

The question of whether space and time are discrete or continuous, and whether there's a smallest possible length scale, is still unanswered.