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when toggle format what by license comment
Jun 18, 2019 at 4:04 comment added user28715 @robertbristow-johnson nothing special, just the way it's burnt in over the years
Jun 18, 2019 at 3:59 comment added robert bristow-johnson just curious about notation, Stanley. why is the reciprocal of $z$ denoted $z^{-1}$ but the reciprocal of $s$ is $1/s$? just seems curious.
Jun 17, 2019 at 0:04 history answered user28715 CC BY-SA 4.0