Sorry, I think I misspoke. I didn't mean that I think of it in those terms normally. working with RF everyday, I think of it as time and frequency domain in the

Sorry, I think I misspoke. I didn't mean that I think of it in those terms normally. working with RF everyday, I think of it as time and frequency domain in the sense that you were describing. But mathematically I could see how the polynomial makes sense. Also, I was only thinking about discreet time since we are talking about the fft.